| {"qid": "Colon-Bench_516", "question": "Regarding the spatial orientation and appearance of the lesion at 16.0s, which detail is observed?", "options": ["A. The lesion sits atop a haustral fold and appears moderately translucent.", "B. The lesion drapes over a mucosal fold and appears slightly erythematous.", "C. The lesion adheres to a colonic wall and appears distinctly lobulated.", "D. The lesion rests against a posterior wall and appears notably friable.", "E. The lesion lies behind a semilunar fold and appears uniformly pale."], "answer": "B", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/8ac75ea842554efcb8f17acff22f2334.mp4"}} | |
| {"qid": "Colon-Bench_33", "question": "How does the blue dye interact with the colon lumen and the lesion in this clip?", "options": ["A. It collects in the dependent fold, outlining the lesion's depression", "B. It gathers around the base, demarcating the lesion's elevation", "C. It pools along the left side, highlighting the lesion's contours", "D. It stains along the right side, defining the lesion's margins", "E. It accumulates in the crypts, accentuating the lesion's pit patterns"], "answer": "C", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/8a69c9d7ee864a12906df584498f642d.mp4"}} | |
| {"qid": "Colon-Bench_807", "question": "Where is the lesion positioned relative to the screen and anatomy when it becomes visible at the 2.0s mark?", "options": ["A. Lower right quadrant on a flat mucosal surface", "B. Upper right quadrant tucked behind a fold", "C. On the crest of a haustral fold in the upper left", "D. In the center of the lumen surrounded by suction marks", "E. Directly adjacent to the appendiceal orifice"], "answer": "C", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/c2fe521c8b02418890aa7f713b9e7bba.mp4"}} | |
| {"qid": "Colon-Bench_588", "question": "At the start of the video (0.0s), what type of finding is immediately visible on the haustral fold?", "options": ["A. Slightly depressed lesion (Paris IIc)", "B. Completely flat lesion (Paris IIb)", "C. Sessile polyp", "D. Pedunculated polyp (Paris Ip)", "E. No abnormality detected"], "answer": "C", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/a70bf804c79d4804a77782241835192d.mp4"}} | |
| {"qid": "Colon-Bench_1309", "question": "When the area is revisited later in the clip (e.g., at 19s and 57s), how many findings are documented on the same haustral fold?", "options": ["A. Five localized ulcers", "B. Two adjacent diverticula", "C. Three clustered polyps", "D. Four scattered erosions", "E. Two separate adenomas"], "answer": "B", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/81ae92d8eddc49c7ae6bf2d412ce9173.mp4"}} | |
| {"qid": "Colon-Bench_575", "question": "What clinical finding is identified from the start of the video clip?", "options": ["A. Adenocarcinoma", "B. Normal mucosa", "C. Crohn's disease", "D. Diverticulosis", "E. Angiodysplasia"], "answer": "D", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/e257d3c8d18f45bb8f4f21fbe3fde530.mp4"}} | |
| {"qid": "Colon-Bench_1293", "question": "At the 6-second mark of the video, what specific clinical finding becomes clearly visible to the viewer?", "options": ["A. Diverticula", "B. A cluster of suction marks", "C. Fecal material mimicking a lesion", "D. A pedunculated polyp (Paris Ip)", "E. No abnormality detected"], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/ab9b75d35bbf4be6803528c22d6bc947.mp4"}} | |
| {"qid": "Colon-Bench_837", "question": "Based on the sequence of events in the clip, what procedural action is performed after the lesion is identified?", "options": ["A. The lesion is injected and lifted using a needle.", "B. The lesion is clipped and secured using a hemoclip.", "C. The lesion is ablated and cauterized using a probe.", "D. The lesion is sampled and retrieved using a forceps.", "E. The lesion is captured and removed using a snare."], "answer": "E", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/bce106623dd54bcc9a3b50eaf94beba3.mp4"}} | |
| {"qid": "Colon-Bench_648", "question": "Regarding the 3-5 mm lesion visible at the start of the footage, where specifically is it located on the colon wall?", "options": ["A. On a flat patch of the colonic wall", "B. On the side of a mucosal fold", "C. Behind the curve of a haustral fold", "D. At the base of a haustral fold", "E. On the crest of a haustral fold"], "answer": "E", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/0f368df7e22749a5828d64de8012a310.mp4"}} | |
| {"qid": "Colon-Bench_212", "question": "At the very beginning of the video (0.0s), what abnormality is identified on the left side of the bowel wall?", "options": ["A. A small pedunculated polyp attached to a transverse fold.", "B. A diminutive sessile polyp located on a haustral fold.", "C. A large subpedunculated polyp situated on a mucosal fold.", "D. A tiny flat-elevated lesion found near a semilunar fold.", "E. A minute depressed lesion located on a colonic fold."], "answer": "B", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/be0fd0820f674551aacde60c9770ee1e.mp4"}} | |
| {"qid": "Colon-Bench_579", "question": "Based on the visual characteristics observed from the start of the video, what are the estimated diameter and surface texture of the diminutive lesion?", "options": ["A. 3-5 mm in diameter with a smooth, pale surface", "B. 4-5 mm in diameter with a granular, pinkish surface", "C. 1-4 mm in diameter with a lobulated, hyperemic surface", "D. 2-3 mm in diameter with a pitted, opaque surface", "E. 1-2 mm in diameter with a flat, reddish surface"], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/eeab4411fa444128ba3a6b79c15f4968.mp4"}} | |
| {"qid": "Colon-Bench_67", "question": "At the very beginning of the clip (0.0s), what abnormality is identified on a fold on the right side of the colon wall?", "options": ["A. A raised nodule", "B. A sessile polyp", "C. A flat adenoma", "D. A pedunculated polyp", "E. A depressed lesion"], "answer": "B", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/eb6227d9e1ec4b448f3337dfb722e44c.mp4"}} | |
| {"qid": "Colon-Bench_66", "question": "Later in the video, what procedural action is taken to help demarcate the lesion's borders and surface pit pattern?", "options": ["A. Acetic acid is applied to the mucosa to induce a white-out effect.", "B. A submucosal injection is administered to lift the lesion.", "C. The lesion is palpated with closed biopsy forceps.", "D. The imaging mode is switched to Narrow Band Imaging (NBI).", "E. Chromoendoscopy is performed using blue dye spray."], "answer": "E", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/3cd7e465ae17459081df793d92d833de.mp4"}} | |
| {"qid": "Colon-Bench_1463", "question": "What are the morphological characteristics of the lesion visible at the 12.0-second mark?", "options": ["A. A flat hyperplastic lesion with a pale mucosal texture", "B. A small sessile polyp with a slightly lobulated surface", "C. A raised erythematous plaque with a central indentation", "D. A rounded submucosal bulge with a smooth surface layer", "E. A distinct oval-shaped outpouching with a dark orifice"], "answer": "E", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/485736e2213c470899195aa7fa409d7b.mp4"}} | |
| {"qid": "Colon-Bench_1169", "question": "Which of the following best describes the abnormality identified as it becomes clearly visible on the haustral fold?", "options": ["A. A large semi-pedunculated polyp, roughly 9-11mm in size", "B. A small sessile polyp, approximately 4-6mm in size", "C. A medium pedunculated polyp, between 8-10mm in length", "D. A diminutive flat lesion, approximately 2-4mm in size", "E. A subtle depressed lesion, measured at 3-5mm in width"], "answer": "B", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/ff3689c6376341fb9615183bde3f95c6.mp4"}} | |
| {"qid": "Colon-Bench_669", "question": "After the camera returns to the lesion at the 10.0-second mark, what procedural action is visualized?", "options": ["A. The lesion is measured with a snare loop", "B. The lesion is injected with a saline solution", "C. The lesion is probed with a biopsy forceps", "D. The lesion is sprayed with a blue dye", "E. The lesion is washed with a water jet"], "answer": "E", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/2dca4789729c4330a247f7c5dec396aa.mp4"}} | |
| {"qid": "Colon-Bench_1163", "question": "Regarding the temporal sequence of the video, what clinical event occurs starting at approximately 42 seconds?", "options": ["A. The endoscope is withdrawn to reveal a large pedunculated polyp.", "B. A second, similar polyp is identified and removed.", "C. Submucosal injection is performed to lift the haustral fold.", "D. The first lesion is finally resected after a failed snare attempt.", "E. The imaging mode is switched to NBI to better visualize the surface."], "answer": "B", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/dadd16ae2f0a4c5d8338135fbf40f6bf.mp4"}} | |
| {"qid": "Colon-Bench_199", "question": "How is the primary lesion described in terms of its appearance and position in the video?", "options": ["A. A small, pale-yellow plaque with a fuzzy, cloud-like pattern on a transverse colon fold", "B. A raised, yellowish-tan nodule with a smooth, pearl-like surface on a sigmoid colon wall", "C. A flat, cherry-red lesion with a radiating, fern-like pattern on a haustral fold crest", "D. A sessile, pale-white polyp with a fine, pit-like texture on a cecal wall base", "E. A depressed, violet-hued ulcer with a thick, fibrin-rich base on a descending colon fold"], "answer": "C", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/94402daa5ff84675b1053c8ad8820bc2.mp4"}} | |
| {"qid": "Colon-Bench_1344", "question": "What finding is identified on the right side of the colon wall from the very beginning of the clip (0.0s)?", "options": ["A. A mucosal nodule", "B. A diminutive polyp", "C. A raised lesion", "D. A pedunculated polyp", "E. A sessile polyp"], "answer": "E", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/8bde7accbec04d2a8ced21b86af18ae6.mp4"}} | |
| {"qid": "Colon-Bench_432", "question": "In relation to the surrounding colonic anatomy and color, how is the lesion situated and described?", "options": ["A. It is situated on a luminal bend and appears slightly darker than the surrounding mucosa.", "B. It is situated on a haustral fold and appears slightly paler than the surrounding mucosa.", "C. It is situated on a distal fold and appears more erythematous than the surrounding mucosa.", "D. It is situated on a mucosal bridge and appears more vascular than the surrounding mucosa.", "E. It is situated on a rectal valve and appears slightly redder than the surrounding mucosa."], "answer": "B", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/8bde7accbec04d2a8ced21b86af18ae6.mp4"}} | |
| {"qid": "Colon-Bench_340", "question": "Following the application of a hemoclip to the lesion, what event is visible at approximately the 2:20 mark?", "options": ["A. Active spurting bleeding", "B. Continuous flowing bleeding", "C. Steady trickling bleeding", "D. Rapid spraying bleeding", "E. Slow oozing bleeding"], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/f08bc833f0e44fabb932960b88dd15da.mp4"}} | |
| {"qid": "Colon-Bench_82", "question": "When viewed under narrow-band imaging (NBI), what specific surface and color characteristics does the identified lesion exhibit?", "options": ["A. Whitish with faint mucosal openings and meshwork", "B. Brownish with distinct surface pits and vasculature", "C. Grayish with dense crypt patterns and microvasculature", "D. Pale with uniform surface patterns and capillaries", "E. Darkened with irregular surface ridges and vessels"], "answer": "B", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/11adce95e4ee407aad5d307dd29e7832.mp4"}} | |
| {"qid": "Colon-Bench_693", "question": "When the lesion is viewed under white light later in the clip, what are its approximate size and surface texture?", "options": ["A. Approximately 4-5 mm and smooth.", "B. Approximately 7-9 mm and nodular.", "C. Approximately 6-8 mm and lobulated.", "D. Approximately 2-3 mm and granular.", "E. Approximately 10-12 mm and irregular."], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/8b50165a273f438c83e9d6d0e3c927c3.mp4"}} | |
| {"qid": "Colon-Bench_1059", "question": "Based on the lesion's appearance, what specific action has been taken to prepare for endoscopic mucosal resection?", "options": ["A. The lesion has been \"lifted\" with a submucosal injection containing blue dye.", "B. The lesion has been \"tattooed\" with a peripheral injection containing carbon ink.", "C. The lesion has been \"primed\" with a surface spray containing mucolytic solution.", "D. The lesion has been \"stained\" with a mucosal irrigation containing indigo carmine.", "E. The lesion has been \"cleansed\" with a targeted flush containing simethicone solution."], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/2365803be63c406397aad753d50cb14f.mp4"}} | |
| {"qid": "Colon-Bench_1116", "question": "What type of finding is identified on the crest of the haustral fold?", "options": ["A. A 6-10mm subpedunculated polyp", "B. A 2-5mm flat polyp", "C. A 12-18mm sessile polyp", "D. A 6-10mm sessile polyp", "E. A 1-5mm pedunculated polyp"], "answer": "D", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/c92ab6db39184f98bbfe2269d50d4eca.mp4"}} | |
| {"qid": "Colon-Bench_1184", "question": "As the camera pans, what type of abnormality becomes visible on the haustral fold?", "options": ["A. Tubular adenoma (precancerous polyp)", "B. Aphthous ulcer (mucosal erosion)", "C. Diverticulum (colonic outpouching)", "D. Submucosal lipoma (benign fatty mass)", "E. Angioectasia (vascular malformation)"], "answer": "E", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/03523ebd77cf44dcabc8718879fe4f5f.mp4"}} | |
| {"qid": "Colon-Bench_545", "question": "What abnormality is visible from the start of the video (0.0s) located on a haustral fold?", "options": ["A. A large, hyperemic subepithelial mass with a regular capillary pattern.", "B. A small, erythematous sessile polyp with a smooth surface pattern.", "C. A tiny, yellowish mucosal nodule with a granular surface texture.", "D. A diminutive, whitish flat lesion with a stellar pit pattern.", "E. A medium, pale pedunculated polyp with a tubular pit pattern."], "answer": "B", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/dadd16ae2f0a4c5d8338135fbf40f6bf.mp4"}} | |
| {"qid": "Colon-Bench_459", "question": "How does the lesion appear under Blue Light Imaging (BLI) at the start of the clip?", "options": ["A. Pale with a smooth surface under Blue Light Imaging (BLI)", "B. Brownish with an irregular surface under Blue Light Imaging (BLI)", "C. Dark with a pitted surface under Blue Light Imaging (BLI)", "D. Greyish with a granular surface under Blue Light Imaging (BLI)", "E. Tan with a lobulated surface under Blue Light Imaging (BLI)"], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/a4fdca836b144e6c8a48f73af6ad59f1.mp4"}} | |
| {"qid": "Colon-Bench_343", "question": "As the camera views the polyp on the fold, what other clinical finding is visible in the upper right background of the scene?", "options": ["A. A vascular ectasia.", "B. A mucosal protrusion.", "C. A suction granuloma.", "D. A colonic diverticulum.", "E. A lymphoid follicle."], "answer": "D", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/3af0b59838c64b67a2f09f7e408e0a70.mp4"}} | |
| {"qid": "Colon-Bench_556", "question": "Which of the following best describes the finding and its specific location within the field of view?", "options": ["A. A tiny pedunculated polyp located on the base of a haustral fold on the right side.", "B. A small sessile polyp located on the crest of a haustral fold on the left side.", "C. A medium semi-pedunculated polyp located on the distal slope of a haustral fold on the right side.", "D. A large flat polyp located on the posterior wall of a haustral fold on the upper side.", "E. A diminutive sessile polyp located on the proximal slope of a haustral fold on the lower side."], "answer": "B", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/ff7358e71634404dad15ea95335a3d5d.mp4"}} | |
| {"qid": "Colon-Bench_168", "question": "Which specific feature is observed within the central depression of the erythematous, raised lesion?", "options": ["A. A pale yellow necrotic slough", "B. A bright red protruding vessel", "C. A light pink friable ulcer base", "D. A dull white fibrinous exudate", "E. A dark red adherent blood clot"], "answer": "E", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/d4e3fd75f7d148969d46cce5baab9917.mp4"}} | |
| {"qid": "Colon-Bench_1161", "question": "What type of finding is immediately visible at the start of the video clip?", "options": ["A. A large granular growth or lesion consistent with a lateral spreading tumor", "B. An elevated yellowish mass or bulge consistent with a potential carcinoid tumor", "C. An inflamed patchy area or redness consistent with a localized ischemic segment", "D. A small sessile growth or lesion consistent with a diminutive tubular adenoma", "E. An irregular mucosal defect or ulceration consistent with a recent post-polypectomy site"], "answer": "E", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/5695606d7e584dac95c942ba2366fdc5.mp4"}} | |
| {"qid": "Colon-Bench_290", "question": "Regarding the lesion that becomes visible at 8.5 seconds, how is its color described in relation to the surrounding tissue?", "options": ["A. Opaque, white appearance contrasting with tan mucosa", "B. Pale, yellowish appearance contrasting with erythematous mucosa", "C. Dark, pigmented appearance contrasting with normal mucosa", "D. Translucent appearance contrasting with hypervascular mucosa", "E. Bright red appearance contrasting with pale mucosa"], "answer": "B", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/d232756f931f47f39d7b3d10dc44b6d7.mp4"}} | |
| {"qid": "Colon-Bench_905", "question": "Following the identification of the lesion at 9.0s, what action does the endoscopist take for the remainder of the video clip?", "options": ["A. Maintains a focused inspection of the granular area of the lesion.", "B. Performs a systematic evaluation of the lateral border of the lesion.", "C. Continues a steady observation of the proximal margin of the lesion.", "D. Conducts a detailed assessment of the central portion of the lesion.", "E. Executes a precise examination of the vascular pattern of the lesion."], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/ab430d0964664fa9abdf24c4d563c711.mp4"}} | |
| {"qid": "Colon-Bench_431", "question": "Regarding the lesion that becomes visible at 32.0 seconds, what is its estimated diameter and morphological appearance?", "options": ["A. 12-15 mm and oval in shape", "B. 3-5 mm and rounded in shape", "C. 20-25 mm and lobulated in shape", "D. 10-15 mm and sessile in shape", "E. 5-8 mm and irregular in shape"], "answer": "E", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/20a36e3847e9464eb6be1d67d69c1673.mp4"}} | |
| {"qid": "Colon-Bench_1086", "question": "Regarding the lesion that becomes visible at 8.0 seconds, how is the appearance and movement of the polyp head described?", "options": ["A. It is reddish/erythematous and hangs loosely from its stalk", "B. It is yellowish/xanthomatous and moves slightly with the bowel wall", "C. It is purplish/violaceous and swings broadly from its stalk", "D. It is whitish/hypovascular and stays firmly on the mucosal wall", "E. It is pinkish/isochromic and slides quickly behind a colonic fold"], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/07cdec7a28444338aaf377167241d80d.mp4"}} | |
| {"qid": "Colon-Bench_178", "question": "After the lesion is visualized and characterized, what action is taken to manage it?", "options": ["A. Cold biopsy forceps sampling", "B. Argon plasma coagulation (APC) ablation", "C. Removal using a hot snare technique", "D. Mechanical clip application", "E. Submucosal injection of a lifting agent"], "answer": "C", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/4d0a5b54368142539fd704834022aa64.mp4"}} | |
| {"qid": "Colon-Bench_370", "question": "What specific instrument is used to remove the lesion at the end of the video clip?", "options": ["A. Argon plasma coagulation probe", "B. Monopolar coagulation grasper", "C. Hot snare", "D. Cold snare", "E. Cold biopsy forceps"], "answer": "E", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/d1c8125439e3431bb4222273c32f2573.mp4"}} | |
| {"qid": "Colon-Bench_604", "question": "Which of the following best describes the color and morphology of the focal lesion seen on the mucosal wall?", "options": ["A. A reddish-purple patch with a darker central area of vascular congestion", "B. A bluish-tinted mass with a smooth overlying surface of normal mucosa", "C. A yellowish-white plaque with a thin surface layer of fibrinous exudate", "D. A pale-pinkish polyp with a subtle lace-like pattern of epithelial crypts", "E. A bright-reddened erosion with a circular peripheral halo of mucosal edema"], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/b2e162ad3ca945f8bbedbfc506b7625d.mp4"}} | |
| {"qid": "Colon-Bench_1224", "question": "Which of the following best describes the visual characteristics of the lesion and its immediate surroundings?", "options": ["A. Congested, mildly edematous tissue surrounded by multiple small blanched recent saline injection markings", "B. Erythematous, mostly sessile growth surrounded by multiple radiating prominent mucosal folds and vessels", "C. Pale, slightly nodular mucosa surrounded by multiple distinct dark blue/black endoscopic tattoo markings.", "D. Friable, highly elevated surface surrounded by numerous pale fibrotic post-resection scar tissue areas", "E. Granular, somewhat depressed lesion surrounded by multiple shiny metallic permanent endoscopic hemoclips"], "answer": "C", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/b8ec7dbeb52944d78159a08866df95e1.mp4"}} | |
| {"qid": "Colon-Bench_911", "question": "Which description accurately reflects the visual characteristics of the lesion seen starting at 24.0s?", "options": ["A. Yellowish with a lobulated, partially villous surface", "B. Pale with a smooth, completely uniform surface", "C. Whitish with a depressed, deeply ulcerated surface", "D. Erythematous with an irregular, slightly granular surface", "E. Hyperemic with an uneven, distinctly multinodular surface"], "answer": "D", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/ec2f50ff29e3455ebb63b1c470e95986.mp4"}} | |
| {"qid": "Colon-Bench_838", "question": "At the 0.0s mark, what is the appearance of the lesion's surface as it sits on the crest of the mucosal fold?", "options": ["A. Marked by a pit pattern (circular surface openings)", "B. Covered with a mucus cap (cloudy white exudate)", "C. Marked by a central depression (shallow concave area)", "D. Lined with a villous texture (fine fingerlike projections)", "E. Showing a vascular network (dilated capillary vessels)"], "answer": "B", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/0eaaa92fea2b40d4ae94a5636d48b0d3.mp4"}} | |
| {"qid": "Colon-Bench_1277", "question": "What specific substance or feature is described as extending inferiorly from the rim of the identified orifice?", "options": ["A. A flow of pale liquid or inflammatory debris", "B. A stream of clear mucus or bubbly secretions", "C. A streak of yellowish fluid or stool residue", "D. A layer of whitish foam or intestinal liquid", "E. A trace of crimson blood or hematin deposits"], "answer": "C", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/b1cc99f5d2af438585683b16e1d46c7f.mp4"}} | |
| {"qid": "Colon-Bench_976", "question": "Regarding the lesion that becomes visible at 1.0s, which of the following best describes its clock position and surface appearance?", "options": ["A. Located at the 12 o'clock position with a significantly pale surface", "B. Located at the 3 o'clock position with a distinctly nodular surface", "C. Located at the 2 o'clock position with a noticeably granular surface", "D. Located at the 9 o'clock position with a partially yellowish surface", "E. Located at the 6 o'clock position with a slightly erythematous surface"], "answer": "E", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/90723d02b4f14a759b9d2aca37c8d92d.mp4"}} | |
| {"qid": "Colon-Bench_1395", "question": "At the 1.0-second mark, what specific finding becomes clearly visible on a haustral fold?", "options": ["A. A diminutive polyp", "B. A sessile polyp", "C. A small diverticulum", "D. A flat lesion", "E. A pedunculated polyp"], "answer": "B", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/04d4e32e61c141f996c712c238cbafc2.mp4"}} | |
| {"qid": "Colon-Bench_1160", "question": "Regarding the surface and margins of the identified lesion, which of the following best describes its clinical appearance?", "options": ["A. Ulcerated surface texture with irregular borders", "B. Granular surface texture with indistinct borders", "C. Nodular surface texture with circumscribed borders", "D. Smooth surface texture with well-defined borders", "E. Villous surface texture with sharp borders"], "answer": "B", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/7bad0c4bac304a37b48cc7daee56dca6.mp4"}} | |
| {"qid": "Colon-Bench_206", "question": "At the beginning of the video, what specific characteristic is noted regarding the elevation of the colon wall?", "options": ["A. It has been displaced by an intramural hematoma containing dark blood", "B. It has been pushed by an extrinsic structure containing solid tissue", "C. It has been lifted by a submucosal injection containing blue dye", "D. It has been swollen by a localized edema containing serous fluid", "E. It has been protruded by a submucosal lipoma containing yellow fat"], "answer": "C", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/3b192c7cf1ef4003a22d7d1c2bf6efa1.mp4"}} | |
| {"qid": "Colon-Bench_542", "question": "Which of the following describes the surface appearance and color of the lesion once it is clearly visible?", "options": ["A. Lobulated, reddened surface.", "B. Villous, pale surface with thick overlying mucus.", "C. Serrated, yellow surface with a cloud-like appearance.", "D. Smooth, translucent surface with a central depression.", "E. Granular, white surface with no clear margins."], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/bd793c0e6efa4f838e27eeadf3a7f0b9.mp4"}} | |
| {"qid": "Colon-Bench_1320", "question": "At the 14.0-second mark, what type of abnormality becomes visible on the inferior colon wall?", "options": ["A. Pedunculated polyp", "B. Sessile polyp", "C. Inflammatory pseudopolyp", "D. Diverticulum", "E. No abnormality detected"], "answer": "B", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/33b11f4412fd49a5a13994f8805b20a5.mp4"}} | |
| {"qid": "Colon-Bench_225", "question": "What type of abnormality is identified from the start of the video?", "options": ["A. A flat lesion", "B. A mucosal ulcer", "C. A sessile polyp", "D. A depressed lesion", "E. A pedunculated polyp"], "answer": "C", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/deb68a99f06e4fdc8599511fd4892c75.mp4"}} | |
| {"qid": "Colon-Bench_89", "question": "Regarding the surface texture and color of the lesion identified at the 28.0-second mark, which of the following best describes its appearance?", "options": ["A. Smooth and sessile, appearing translucent or slightly yellowish", "B. Multilobulated and nodular, appearing isochromatic or slightly pale", "C. Flat and granular, appearing erythematous or deeply hyperemic", "D. Depressed and eroded, appearing dark red or intensely hemorrhagic", "E. Villous and frond-like, appearing milky white or opaque white"], "answer": "B", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/6cf77bb91c3144eeb00e11419703f164.mp4"}} | |
| {"qid": "Colon-Bench_1442", "question": "Regarding the appearance of the lesion at 72 seconds, which description accurately captures its color and surface texture?", "options": ["A. Brownish (hyperpigmented) color with a villous, finely textured surface", "B. Reddish (erythematous) color with a smooth, slightly lobulated surface", "C. Bluish (violaceous) color with a friable, markedly nodular surface", "D. Whitish (hypopigmented) color with a flat, slightly granular surface", "E. Yellowish (xanthomatous) color with a smooth, slightly depressed surface"], "answer": "B", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/672e4ea783964697b183a70d6a3af53d.mp4"}} | |
| {"qid": "Colon-Bench_765", "question": "What finding becomes clearly visible for the first time at the 28.0-second mark of the video?", "options": ["A. A medium ulcerated mass", "B. A small sessile polyp", "C. A diminutive raised nodule", "D. A tiny pedunculated polyp", "E. A large flat lesion"], "answer": "B", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/a66c05dd615345ce8745cb78320c9cd7.mp4"}} | |
| {"qid": "Colon-Bench_374", "question": "At the 5.0-second mark, what clinical finding becomes clearly visible at the anal verge during the retroflexed view of the rectum?", "options": ["A. Hypertrophied anal papilla", "B. Internal hemorrhoid", "C. No abnormality detected", "D. Anal fissure", "E. Rectal mucosal prolapse"], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/1359e295c8a54921b21115fd86f1e930.mp4"}} | |
| {"qid": "Colon-Bench_641", "question": "Which set of clinical characteristics best describes the 5-8 mm lesion observed at the start of the video?", "options": ["A. Pale-pinkish color with a perfectly smooth or glistening surface", "B. Yellowish-white color with a slightly granular or lobulated surface", "C. Opaque-whitish color with a mostly regular or pitted surface", "D. Deep-reddish color with a notably villous or micropapillary surface", "E. Translucent-gray color with a visibly flat or indistinct surface"], "answer": "B", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/5332918a39f64da79b573987098d2c72.mp4"}} | |
| {"qid": "Colon-Bench_437", "question": "What type of finding is first clearly visible at the 1.0-second mark on the right colon wall?", "options": ["A. Sessile tubulovillous adenoma (TVA)", "B. Diminutive tubular adenoma (TA)", "C. Sessile serrated lesion (SSL)", "D. Flat hyperplastic polyp (HP)", "E. Pedunculated tubular adenoma (TA)"], "answer": "C", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/815d8b8891f2427ab4dbbfcb4df87d5d.mp4"}} | |
| {"qid": "Colon-Bench_808", "question": "What visual landmark is consistently located at the inferior margin of the polyp throughout the video clip?", "options": ["A. A distinct pale white patch", "B. A small light yellow nodule", "C. A clear light blue tattoo", "D. A large bright pink vessel", "E. A prominent dark red spot"], "answer": "E", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/3f08b092212e42aab14a096cc1976f16.mp4"}} | |
| {"qid": "Colon-Bench_1379", "question": "Where is the lesion specifically located and how does its color compare to the adjacent healthy mucosa?", "options": ["A. On the crest of a haustral fold, lighter in color than the surrounding pink mucosa", "B. Along the mid-descending colon wall, brighter in color than the surrounding pink mucosa", "C. In the crease of a haustral fold, darker in color than the surrounding pink mucosa", "D. Behind the curve of a haustral fold, redder in color than the surrounding pink mucosa", "E. At the junction of the cecal base, paler in color than the surrounding pink mucosa"], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/7bad0c4bac304a37b48cc7daee56dca6.mp4"}} | |
| {"qid": "Colon-Bench_380", "question": "What type of abnormality is first clearly identified in the video at the 2.0-second mark?", "options": ["A. A sessile polyp characteristic of a sessile serrated lesion (SSL)", "B. A completely flat lesion (Paris IIb)", "C. A pedunculated adenoma (Paris Ip)", "D. Suction-related mucosal petechiae", "E. No abnormality detected"], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/241d657526b7498aa275d4b7d01abbc5.mp4"}} | |
| {"qid": "Colon-Bench_1265", "question": "At the start of the video (0.0s), what is the anatomical and spatial location of the identified lesion?", "options": ["A. On the slope of a haustral fold in the upper left quadrant", "B. On the crest of a haustral fold in the lower left quadrant", "C. Along the side of a mucosal fold in the lower right quadrant", "D. Behind the edge of a semilunar fold in the upper right quadrant", "E. At the base of a mucosal fold in the upper left quadrant"], "answer": "B", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/66509d2624fb4973895772c8800b09a2.mp4"}} | |
| {"qid": "Colon-Bench_221", "question": "Regarding the surface appearance and coloration of the lesion, which characteristics are observed in the video?", "options": ["A. Pinkish or translucent color with a smooth or slightly lobulated surface", "B. Yellowish or bile-stained color with a nodular or slightly irregular surface", "C. Pale or whitish color with a smooth or slightly granular surface", "D. Hyperemic or opaque color with a friable or slightly ulcerated surface", "E. Erythematous or reddish color with a pitted or slightly villous surface"], "answer": "C", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/9132c96e0351472f8bb00ceb2560468f.mp4"}} | |
| {"qid": "Colon-Bench_1361", "question": "At the start of the video (0.0s), what abnormality is identified in the lower right quadrant of the endoscopic view?", "options": ["A. No abnormality detected", "B. A depressed lesion (Paris III)", "C. A small sessile polyp", "D. A flat, non-elevated lesion (Paris IIb)", "E. A small pedunculated polyp (Paris Ip)"], "answer": "C", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/0bd0f86fc8d6429e8b15fde65a326d92.mp4"}} | |
| {"qid": "Colon-Bench_1118", "question": "When does a lesion first become clearly visible in the rectal segment, and how is it classified morphologically?", "options": ["A. At 2.2s, as a flat mucosal lesion", "B. At 1.0s, as a sessile polyp", "C. At 0.3s, as a depressed lesion", "D. At 0.5s, as a pedunculated polyp", "E. At 1.8s, as a subepithelial mass"], "answer": "B", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/3005c81657014869a5508d5f2ba27a21.mp4"}} | |
| {"qid": "Colon-Bench_1139", "question": "Regarding the location of the lesion identified at the beginning of the clip, where is it specifically situated?", "options": ["A. On the margin of the ileocecal valve", "B. Near the rim of the appendiceal orifice", "C. Behind the curve of a haustral fold", "D. On the crest of a haustral fold", "E. At the base of a semilunar fold"], "answer": "D", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/24ea6ca5bdd0477b90d5e8939ac3ac38.mp4"}} | |
| {"qid": "Colon-Bench_809", "question": "At the start of the video, what abnormality is identified on the left side of the frame?", "options": ["A. A tiny non-polypoid lesion", "B. A diminutive flat adenoma", "C. A diminutive sessile polyp", "D. A small pedunculated polyp", "E. A large semisessile polyp"], "answer": "C", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/c7ff9167725b40a59b0f2dfd60768474.mp4"}} | |
| {"qid": "Colon-Bench_230", "question": "Based on the clinical description, what is the estimated size and specific location of the identified lesion?", "options": ["A. 8–10 mm on the surface of a colonic fold", "B. 5–7 mm on the side of a mucosal fold", "C. 1–2 mm near the base of a transverse fold", "D. 3–5 mm on the crest of a haustral fold", "E. 6–8 mm on the slope of a semilunar fold"], "answer": "D", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/7b94503aee99400e87d0a9cc8be981f1.mp4"}} | |
| {"qid": "Colon-Bench_892", "question": "At the very beginning of the video, what clinical finding is immediately visible to the observer?", "options": ["A. No abnormality detected", "B. A large pedunculated lesion (Paris Ip) with a visible stalk", "C. A flat mucosal elevation (Paris IIa) that is pale in color", "D. A mucosal bridge spanning across two haustral folds", "E. A small, reddish sessile polyp"], "answer": "E", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/34dbda657ee148c48e612ef3de9a157d.mp4"}} | |
| {"qid": "Colon-Bench_991", "question": "Based on the Narrow Band Imaging (NBI) used at the start of the video, how is the lesion's appearance described relative to the surrounding mucosa?", "options": ["A. The lesion appears whitish with a faint circular pattern, distinguishing it from the surrounding greenish mucosa.", "B. The lesion appears hypervascular with a dense mesh-like pattern, distinguishing it from the surrounding greenish mucosa.", "C. The lesion appears pale with an invisible capillary network, distinguishing it from the surrounding cyanotic mucosa.", "D. The lesion appears brownish with a clear vascular pattern, distinguishing it from the surrounding greenish mucosa.", "E. The lesion appears grayish with a regular honeycomb pattern, distinguishing it from the surrounding light-green mucosa."], "answer": "D", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/c17b7b8d241f4700b6ad2d036dda240b.mp4"}} | |
| {"qid": "Colon-Bench_550", "question": "Based on the visual appearance of the lesion situated on the colonic fold, how are its size and surface texture characterized?", "options": ["A. Approximately 4-5mm in diameter with a smooth surface and isochromatic color.", "B. Approximately 6-7mm in diameter with a granular surface and erythematous color.", "C. Approximately 12-15mm in diameter with a nodular surface and whitish color.", "D. Approximately 2-3mm in diameter with a flat surface and pale color.", "E. Approximately 8-10mm in diameter with a lobulated surface and hyperemic color."], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/3af0b59838c64b67a2f09f7e408e0a70.mp4"}} | |
| {"qid": "Colon-Bench_415", "question": "At what timestamp does the abnormality first become clearly visible in the video?", "options": ["A. 1.0 seconds", "B. 0.5 seconds", "C. 9.5 seconds", "D. 5.0 seconds", "E. 2.5 seconds"], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/41b7357798dc48a3bbddc74f1f5128ed.mp4"}} | |
| {"qid": "Colon-Bench_131", "question": "In addition to the primary pigmentation observed at 2.0s, what specific feature is identified at the site of the abnormality?", "options": ["A. A small dark central marking, possibly indicating the injection track", "B. A subtle white fibrous band, possibly indicating a healed biopsy site", "C. A faint red vascular network, possibly indicating focal angiodysplasia", "D. A large pale mucosal elevation, possibly indicating a submucosal lipoma", "E. A jagged yellow surface exudate, possibly indicating an active infection"], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/9eb903ef79dc4ae289eb60c0b6fe3ee8.mp4"}} | |
| {"qid": "Colon-Bench_932", "question": "Regarding the lesion identified at the 26.0s mark, what are its morphology and estimated size as stated in the clinical description?", "options": ["A. Sessile or flat, measuring approximately 5-6mm in diameter.", "B. Semi-pedunculated, measuring approximately 7-8mm in diameter.", "C. Protruded or polypoid, measuring approximately 2-4mm in diameter.", "D. Pedunculated, measuring approximately 10-12mm in diameter.", "E. Slightly elevated, measuring approximately 12-15mm in diameter."], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/40910c1ecac24fb5b7903bd773df990d.mp4"}} | |
| {"qid": "Colon-Bench_1336", "question": "Which of the following describes the surface texture and relationship of the lesion to the surrounding tissue as stated in the description?", "options": ["A. A slightly granular surface that is distinct from the pink vascular mucosa", "B. A highly irregular surface that is elevated above the smooth normal wall", "C. A deeply pitted surface that is separated from the flat healthy tissue", "D. A mostly villous surface that is protruding from the pale regular folds", "E. A completely smooth surface that is continuous with the pale uniform mucosa"], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/d9d963d6f9674aa2aca0b54bf7843d8d.mp4"}} | |
| {"qid": "Colon-Bench_1281", "question": "Starting at 07.0 seconds, what specific type of abnormality is clearly visible on the right side of the screen occupying a significant portion of the lumen?", "options": ["A. Villous adenoma", "B. Inverted diverticulum", "C. Colonic lipoma", "D. Malignant mass", "E. Pedunculated polyp"], "answer": "C", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/0eee1856c34f4b5ea339699b1301b6b2.mp4"}} | |
| {"qid": "Colon-Bench_218", "question": "At what point in the video is the mucosal abnormality first clearly identified, and what is its morphology?", "options": ["A. A sessile, slightly elevated lesion is first clearly visible at 1.0s.", "B. A depressed, erythematous nodule is first clearly visible at 3.4s.", "C. A semi-pedunculated, lobulated mass is first clearly visible at 1.6s.", "D. A flat, non-granular lesion is first clearly visible at 0.8s.", "E. A pedunculated, ovoid polyp is first clearly visible at 2.5s."], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/b8ec7dbeb52944d78159a08866df95e1.mp4"}} | |
| {"qid": "Colon-Bench_842", "question": "What is the estimated diameter and morphology of the lesion identified on the haustral fold?", "options": ["A. Roughly 1-2 mm, flat", "B. Roughly 9-10 mm, subpedunculated", "C. Roughly 3-4 mm, sessile", "D. Roughly 7-8 mm, sessile", "E. Roughly 5-6 mm, pedunculated"], "answer": "C", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/3ece6edb9296428891970f97b3dea45b.mp4"}} | |
| {"qid": "Colon-Bench_970", "question": "What is the surface appearance of the abnormality observed starting at the 1.0s mark?", "options": ["A. Dull white and granular", "B. Bright red and friable", "C. Light yellow and nodular", "D. Pale pink and glistening", "E. Deeply red and ulcerated"], "answer": "D", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/a8ad51b79f654eb3a71917d2089a92dd.mp4"}} | |
| {"qid": "Colon-Bench_678", "question": "How do the central base and the surrounding border of the lesion appear?", "options": ["A. Tan to brownish granular base with a diffuse friable margin", "B. Pale to pearlescent smooth base with a blurred congestive border", "C. White to yellowish fibrinous base with a distinct erythematous halo", "D. Maroon to purplish vascular base with a sharp hyperemic edge", "E. Grayish to silvery necrotic base with a raised hyperplastic rim"], "answer": "C", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/13ff5ae4422a4a74b44ce38a1271938b.mp4"}} | |
| {"qid": "Colon-Bench_623", "question": "What is the estimated size of the diminutive lesion that first appears at the 1.0-second mark?", "options": ["A. Approximately 1-2mm in diameter", "B. Approximately 2-3mm in diameter", "C. Approximately 4-5mm in diameter", "D. Approximately 3-4mm in diameter", "E. Approximately 5-6mm in diameter"], "answer": "D", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/90723d02b4f14a759b9d2aca37c8d92d.mp4"}} | |
| {"qid": "Colon-Bench_810", "question": "Which of the following best describes the initial appearance of the abnormality as it becomes visible through the transparent endoscopic cap?", "options": ["A. A friable, red, pedunculated mucosal mass", "B. A pitted, white, umbilicated subepithelial lesion", "C. A granular, yellowish, flat mucosal patch", "D. A smooth, pink, bulging submucosal elevation", "E. A lobulated, pale, sessile mucosal growth"], "answer": "D", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/e1d1cc5beb0041eca50c0bde9d0775d8.mp4"}} | |
| {"qid": "Colon-Bench_1190", "question": "Based on the visual assessment, what is the approximate size of the vascular abnormality that becomes visible at the 1.0s mark?", "options": ["A. 1-2mm in size", "B. 7-8mm in size", "C. 2-3mm in size", "D. 4-6mm", "E. 9-10mm in size"], "answer": "D", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/42aced8e7eb6475f82b9a0a386e05051.mp4"}} | |
| {"qid": "Colon-Bench_1355", "question": "At the very beginning of the clip (0.0s), what specific finding is identified on the mucosal fold?", "options": ["A. A sessile polyp", "B. A pedunculated polyp", "C. A mucosal erosion", "D. A diminutive polyp", "E. A flat lesion"], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/e0ab390927cc4560a6f4e8e1c5bff786.mp4"}} | |
| {"qid": "Colon-Bench_864", "question": "As the view clears at the 8.0-second mark, what specific finding is identified attached to a haustral fold?", "options": ["A. A diminutive adenoma", "B. A hyperplastic polyp", "C. A subepithelial mass", "D. A small diverticulum", "E. A pedunculated polyp"], "answer": "E", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/07cdec7a28444338aaf377167241d80d.mp4"}} | |
| {"qid": "Colon-Bench_335", "question": "What type of finding is identified at the start of the video (0.0s) on the mucosal fold?", "options": ["A. Residual stool/debris", "B. Flat elevated lesion (Paris IIa)", "C. No abnormality detected", "D. Sessile polyp", "E. Pedunculated lesion (Paris Ip)"], "answer": "D", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/f79986687593438a94b55de7332a7422.mp4"}} | |
| {"qid": "Colon-Bench_664", "question": "At the beginning of the video (0.0s), which of the following is immediately identified in the colon?", "options": ["A. Residual stool obstructing the lumen", "B. A large sessile polyp", "C. A pedunculated polyp with a thick stalk", "D. A subepithelial lesion with a central depression", "E. No abnormality detected"], "answer": "B", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/f377bfb222ac444897a12966469a2fbc.mp4"}} | |
| {"qid": "Colon-Bench_789", "question": "When Narrow Band Imaging (NBI) is used, how does the color of the lesion change relative to the surrounding mucosa?", "options": ["A. The lesion exhibits a reddish hue compared to the surrounding yellowish mucosa.", "B. The lesion exhibits a bluish hue compared to the surrounding light-pink mucosa.", "C. The lesion exhibits a whitish hue compared to the surrounding hyperemic mucosa.", "D. The lesion exhibits a greenish hue compared to the surrounding brownish mucosa.", "E. The lesion exhibits a brownish hue compared to the surrounding greenish mucosa."], "answer": "E", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/699b5bfce42a417d8528a989fb61eee3.mp4"}} | |
| {"qid": "Colon-Bench_310", "question": "Regarding the temporal visibility of the finding, for approximately how long does the identified lesion remain in view before the colonoscope navigates past it?", "options": ["A. Until approximately 0:12", "B. Until approximately 0:38", "C. Until approximately 0:55", "D. Until approximately 0:20", "E. Until approximately 1:05"], "answer": "D", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/1e78cc8c3b5e4408812b420f59c708ea.mp4"}} | |
| {"qid": "Colon-Bench_70", "question": "How is the surface texture and specific positioning of the lesion described in the video?", "options": ["A. Nodular texture located at the flexure", "B. Granular texture located on a ridge", "C. Smooth texture located behind a fold", "D. Pitted texture located at the valve", "E. Bumpy texture located on a fold"], "answer": "E", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/c28487b62a5b47eb83fb18e63d19a57b.mp4"}} | |
| {"qid": "Colon-Bench_727", "question": "At the 0.0s mark, what type of finding is identified on the left side of the colonic lumen?", "options": ["A. Lateral spreading tumor", "B. Pedunculated polyp", "C. No abnormality detected", "D. Sessile polyp", "E. Subepithelial lesion"], "answer": "D", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/4ba209be11054d259f32167b3183ffce.mp4"}} | |
| {"qid": "Colon-Bench_946", "question": "What clinical finding is identified as it becomes clearly visible on a haustral fold?", "options": ["A. Sessile mucosal polyp", "B. Solitary vascular spot", "C. Endoscopic tattoo mark", "D. Small serrated lesion", "E. Hyperemic mucosal patch"], "answer": "C", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/a3b11ccbc50a4222a36ac017b3ca2f27.mp4"}} | |
| {"qid": "Colon-Bench_784", "question": "A lesion becomes clearly visible at 37.0 seconds. What is its estimated size and specific location relative to the colonic architecture?", "options": ["A. 5-7 mm in diameter, located at the junction of two mucosal folds", "B. 2-4 mm in diameter, located within the base of a semilunar fold", "C. 8-10 mm in diameter, located on the distal side of a haustral fold", "D. 4-6 mm in diameter, located on the crest of a semilunar fold", "E. 1-3 mm in diameter, located along the proximal slope of a fold"], "answer": "D", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/a0340f160168477db16f2fe91b3860d7.mp4"}} | |
| {"qid": "Colon-Bench_752", "question": "During the close-up views of the lesion at the 1:23 and 2:28 marks, what specific feature is identified on its surface?", "options": ["A. An irregular pit pattern consistent with carcinoma", "B. A round pit pattern consistent with inflammatory tissue", "C. A faint pit pattern consistent with a serrated lesion", "D. A regular pit pattern consistent with an adenoma", "E. A star-shaped pit pattern consistent with hyperplasia"], "answer": "D", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/691b82e0901e4caa825eb9bf8d221391.mp4"}} | |
| {"qid": "Colon-Bench_1117", "question": "What are the observed color, morphology, and size of the lesion?", "options": ["A. Erythematous and slightly raised, measuring approximately 5-6mm in diameter", "B. Pale and distinctly sessile, measuring approximately 10-12mm in diameter", "C. Whitish and completely flat, measuring approximately 4-5mm in diameter", "D. Grayish-white and broadly hemispherical, measuring approximately 8-10mm in diameter", "E. Hyperemic and clearly pedunculated, measuring approximately 15-20mm in diameter"], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/387cae36af1749ad9d1158c66c5d756e.mp4"}} | |
| {"qid": "Colon-Bench_755", "question": "Which of the following describes the finding that first becomes clearly visible at the 2.0s mark in the video?", "options": ["A. A pedunculated polyp with a smooth surface pattern", "B. A flat lesion with a granular surface pattern", "C. A sessile polyp with a lobulated surface pattern", "D. A depressed lesion with a pitted surface pattern", "E. A subpedunculated polyp with a villous surface pattern"], "answer": "C", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/a09ec62a7d9d448290ea24398930db08.mp4"}} | |
| {"qid": "Colon-Bench_862", "question": "When viewed under magnification, which specific surface feature does the lesion demonstrate?", "options": ["A. Elongated, tubular pit pattern", "B. Branched, gyrus-like pit pattern", "C. Stellar, papillary pit pattern", "D. Tiny, circular pit pattern", "E. Irregular, distorted pit pattern"], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/e02b5822a3ba40ddb1aba9fa2c7efa31.mp4"}} | |
| {"qid": "Colon-Bench_496", "question": "At the 41.0-second mark of the video, a second lesion is identified. What describes its visual appearance?", "options": ["A. A medium, isolated, light tan to brown growth", "B. A large, circumscribed, pale pink to white polyp", "C. A broad, demarcated, pale yellow to white mass", "D. A small, discrete, dark blue to purple nodule", "E. A small, prominent, dull red to brown lesion"], "answer": "D", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/2296e55d24a647169db3fc95caca0f46.mp4"}} | |
| {"qid": "Colon-Bench_757", "question": "How is the lesion's appearance described relative to the surrounding mucosa under the visualization mode active at 12.0 seconds?", "options": ["A. A lighter, orangish area differing from bluish mucosa", "B. A brighter, reddish area standing out from grayish mucosa", "C. A paler, whitish area appearing against pinkish mucosa", "D. A deeper, purplish area contrasting with yellowish mucosa", "E. A darker, brownish area contrasting with greenish mucosa"], "answer": "E", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/ef0fec3bea6c4dfb8be137b6aed48366.mp4"}} | |
| {"qid": "Colon-Bench_1305", "question": "What characteristic surface finding is visible on the lesion as it becomes clearly visible in the video?", "options": ["A. A \"cherry-red\" or patch of hyperemic mucosa", "B. A \"chicken-skin\" or area of granular texture", "C. A \"mucous cap\" or rim of adherent debris", "D. A \"star-pattern\" or cluster of stellate pits", "E. A \"honeycomb\" or network of fine vessels"], "answer": "C", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/da011109cc144e63a965e87203b499f9.mp4"}} | |
| {"qid": "Colon-Bench_1073", "question": "At the 15.0-second mark, what clinical finding is first clearly visible during the retroflexion maneuver?", "options": ["A. A small, sessile, and bleeding polyp in the rectal vault", "B. A medium, pedunculated, and friable lesion in the distal rectum", "C. A circumferential, stenotic, and necrotic tumor in the rectal ampulla", "D. A large, fungating, and ulcerated mass in the distal rectum", "E. A diminutive, hyperplastic, and pale nodule in the anorectal junction"], "answer": "D", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/815fe3c0cc6042d5930214495f4ca655.mp4"}} | |
| {"qid": "Colon-Bench_467", "question": "Which of the following describes the visual appearance and behavior of the mucus associated with the observed lesion?", "options": ["A. The bright yellow mucus remains fixed in place and is distinct from the surrounding clear mucosa.", "B. The pale green mucus washes away with irrigation and is located along the distal lesion margin.", "C. The brownish red mucus streaks across the lesion surface and is blended into the proximal folds.", "D. The cloudy white mucus adheres to the mucosal wall and is separated from the adjacent flat tissue.", "E. The translucent clear mucus pools in the dependent area and is covering the base of the lesion."], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/bfb4e5d9f571401d915b1a537c28ad5f.mp4"}} | |
| {"qid": "Colon-Bench_1332", "question": "Starting at the 18-second mark, Narrow-Band Imaging (NBI) is activated. How does the appearance of the lesion change at this point in the clip?", "options": ["A. It displays a hypovascular, whitish appearance", "B. It displays a prominent, greenish appearance", "C. It displays a hypervascular, brownish appearance", "D. It displays a congested, reddish appearance", "E. It displays a minimal, yellowish appearance"], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/cc7425908d84403e898686528911910e.mp4"}} | |
| {"qid": "Colon-Bench_1026", "question": "Regarding the lesion's relationship to its surroundings, where is it located and how does its color compare to the adjacent tissue?", "options": ["A. It is on a flexure fold with coloration more yellowish than the nearby mucosa", "B. It is on the posterior wall with coloration more hyperemic than the mucosa", "C. It is on the colonic wall with coloration darker than the adjacent mucosa", "D. It is on a mucosal fold with coloration similar to the surrounding mucosa", "E. It is on a haustral fold with coloration distinctly paler than the mucosa"], "answer": "D", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/e5fe6ed59db1484da254a49a42f0a1d3.mp4"}} | |
| {"qid": "Colon-Bench_182", "question": "What type of abnormality is immediately visible in the video?", "options": ["A. A depressed lesion", "B. A mucosal ulcer", "C. A pedunculated polyp", "D. A sessile polyp", "E. A flat lesion"], "answer": "D", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/84678d6e9fd04a3b895c54769b5e9e70.mp4"}} | |
| {"qid": "Colon-Bench_710", "question": "How does the lesion's appearance change following the injection of the blue-dyed fluid?", "options": ["A. The lesion is raised into a small blue bleb, making its edges and reticular pattern more noticeable.", "B. The lesion is elevated into a large blue cushion, making its margins and granular surface more distinct.", "C. The lesion is expanded into a broad blue disk, making its boundaries and villous surface more obvious.", "D. The lesion is flattened into a dense blue mass, making its borders and ulcerated surface more apparent.", "E. The lesion is lifted into a pale blue dome, making its outlines and mucosal surface more discernible."], "answer": "B", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/ebd0161ae4674c1db3308d15c6177bf3.mp4"}} | |
| {"qid": "Colon-Bench_741", "question": "At what point in the video does the lesion transition from being faintly visible to clearly defined and characterizable?", "options": ["A. At 00:05s during the switch to Blue Light Imaging (BLI).", "B. At 00:07s during the switch to Narrow Band Imaging (NBI).", "C. At 00:09s during the switch to Optical Enhancement (OE).", "D. At 00:14s during the switch to Autofluorescence Imaging (AFI).", "E. At 00:11s during the switch to Linked Color Imaging (LCI)."], "answer": "B", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/f9bc7df22f8f42b5b36ed1e785e33e8b.mp4"}} | |
| {"qid": "Colon-Bench_341", "question": "At the 9.0-second mark, what clinical finding is first clearly identified on the left colon wall?", "options": ["A. A sessile polyp originating upon a semilunar fold.", "B. A flat adenoma positioned across a haustral ridge.", "C. A diminutive nodule appearing on the colonic wall.", "D. A pedunculated polyp arising from a haustral fold.", "E. A lobulated lesion protruding from a mucosal fold."], "answer": "D", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/d486cef8bcd04bfa84a52cee62c05a1c.mp4"}} | |
| {"qid": "Colon-Bench_30", "question": "What procedural action is performed on the lesion later in the video clip?", "options": ["A. A mechanical clip is applied to the base of the fold.", "B. The lesion is cauterized using argon plasma coagulation (APC).", "C. Hemostasis is achieved using a thermal probe.", "D. The lesion is lifted with a submucosal injection.", "E. The lesion is biopsied with standard cold forceps."], "answer": "D", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/d501ea650e704a77b8c91d0c40704861.mp4"}} | |
| {"qid": "Colon-Bench_1349", "question": "Regarding the lesion that becomes visible at 30.5s, how is its mucosal surface and border configuration described?", "options": ["A. Grayish, completely flat mucosal surface with demarcated borders", "B. Whitish, deeply depressed mucosal surface with distinct borders", "C. Pinkish, smoothly rounded mucosal surface with prominent borders", "D. Reddish, slightly raised mucosal surface with irregular borders", "E. Yellowish, coarsely granular mucosal surface with regular borders"], "answer": "D", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/6e955d3e135d428297cec09e1ba33b18.mp4"}} | |
| {"qid": "Colon-Bench_566", "question": "Following the identification of the lesion as a small adenoma, what procedural action is performed later in the video?", "options": ["A. Removal via hot biopsy forceps", "B. Excision via cold biopsy forceps", "C. Removal via snare polypectomy", "D. Ablation via argon plasma coagulation", "E. Resection via EMR technique"], "answer": "C", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/36ffcf11e0564aa7a2a18fa9d4d2b0c2.mp4"}} | |
| {"qid": "Colon-Bench_1304", "question": "At 13.0 seconds, what are the primary color and shape characteristics of the organism seen in the colonic lumen?", "options": ["A. Pearly-white and thread-like", "B. Creamy-white and whip-like", "C. Ivory-white and ribbon-like", "D. Reddish-brown and hook-like", "E. Pale-yellow and spindle-like"], "answer": "C", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/02b21a7894684b88b7347a596290c668.mp4"}} | |
| {"qid": "Colon-Bench_1477", "question": "Which description accurately represents the size, surface texture, and color of the polyp?", "options": ["A. Roughly 10-12mm in diameter, lobulated surface, and color erythematous relative to the nearby mucosa", "B. Approximately 2-3mm in diameter, depressed surface, and color pale relative to the adjacent mucosa", "C. Around 7-9mm in diameter, nodular surface, and color whitish relative to the surrounding mucosa", "D. About 15-18mm in diameter, granular surface, and color yellowish relative to the nearby folds", "E. Approximately 4-6mm in diameter, smooth surface, and color similar to the surrounding mucosa"], "answer": "E", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/f81aa5fcaefe4007a4343f056fada07c.mp4"}} | |
| {"qid": "Colon-Bench_936", "question": "At approximately 40 seconds into the video, what clinical action is performed following the initial visualization of the lesion?", "options": ["A. Clip application to mark the lesion", "B. Submucosal injection to lift the lesion", "C. Forceps biopsy to assess the lesion", "D. Snare polypectomy to remove the lesion", "E. Thermal ablation to treat the lesion"], "answer": "B", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/62c638eaa1b7469dbd948edca1c0c6f1.mp4"}} | |
| {"qid": "Colon-Bench_1359", "question": "What instrument or action is observed towards the end of the video segment, at approximately the 46-second mark?", "options": ["A. A cold snare is introduced to encircle the diminutive polyp for mechanical resection.", "B. A coagulation grasper is introduced to cauterize the bleeding vessel for targeted hemostasis.", "C. A biopsy forceps is introduced to sample the suspicious lesion for histological analysis.", "D. A retrieval net is introduced to capture the resected tissue for specimen recovery.", "E. An injection needle is introduced to target the flat area for submucosal lifting."], "answer": "E", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/699b5bfce42a417d8528a989fb61eee3.mp4"}} | |
| {"qid": "Colon-Bench_1098", "question": "What finding is identified on a haustral fold on the left side of the screen from the start of the video (0.0s)?", "options": ["A. A small, raised nodule", "B. A medium, depressed lesion", "C. A large, pedunculated polyp", "D. A diminutive, flat lesion", "E. A small, sessile polyp"], "answer": "E", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/b219fb8193ea4d40bba67668fa497034.mp4"}} | |
| {"qid": "Colon-Bench_154", "question": "What are the specific visual characteristics of the lesion identified in the video compared to the surrounding mucosa?", "options": ["A. A lesion with distinct yellow coloration and a smooth surface", "B. A lesion with focal reddened coloration and a friable surface", "C. A lesion with subtle whitish coloration and a granular surface", "D. A lesion with opaque grayish coloration and a nodular surface", "E. A lesion with pale brownish coloration and a pitted surface"], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/8390f0eda141491dbcba5e45cdc82e83.mp4"}} | |
| {"qid": "Colon-Bench_920", "question": "At the 22.0s mark of the video, what clinical finding is first clearly identified?", "options": ["A. A submucosal mass", "B. A pedunculated polyp", "C. A sessile polyp", "D. A depressed lesion", "E. A mucosal nodule"], "answer": "C", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/74a16801fa8548898de1f6f37734f1af.mp4"}} | |
| {"qid": "Colon-Bench_561", "question": "Which of the following best describes the morphological appearance of the lesion observed in the video?", "options": ["A. A sessile, lobulated mucosal mass containing a focal hemorrhagic area or necrosis.", "B. A raised, smooth mucosal rim surrounding a central reddish depression or ulceration.", "C. A flat, pale mucosal patch exhibiting a peripheral whitish discoloration or plaque.", "D. A depressed, granular mucosal lesion featuring a diffuse fibrotic scar or furrow.", "E. A pedunculated, firm mucosal polyp displaying a lateral hyperemic stalk or erosion."], "answer": "B", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/907a8aa9d4924e4c9a68d23a143f658d.mp4"}} | |
| {"qid": "Colon-Bench_891", "question": "Regarding the lesion observed in the video, which of the following accurately describes its clinical characteristics and size?", "options": ["A. Small (6-7mm) and hyperemic relative to the surrounding mucosa", "B. Diminutive (3-5mm) and isochromatic with the surrounding mucosa", "C. Diminutive (2-4mm) and congested relative to the surrounding mucosa", "D. Small (7-9mm) and erythematous relative to the surrounding mucosa", "E. Diminutive (1-2mm) and pale relative to the surrounding mucosa"], "answer": "B", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/1f1ca8db1b5b49f89590f4c3c33e8b9f.mp4"}} | |
| {"qid": "Colon-Bench_534", "question": "When the imaging mode transitions later in the video sequence, how is the lesion characterized in relation to its appearance and the surrounding tissue?", "options": ["A. As a diminutive, pale, sessile lesion blending subtly with the adjacent normal colonic wall.", "B. As a tiny, brownish, flat plaque merging seamlessly into the surrounding atrophic epithelium.", "C. As a small, reddish, elevated nodule contrasting with the surrounding healthy mucosa.", "D. As a moderate, pinkish, pedunculated mass protruding distinctly from the nearby vascular patterns.", "E. As a large, erythematous, depressed region standing out from the surrounding inflamed mucosa."], "answer": "C", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/89cb029240c44b709a6a21338d13a809.mp4"}} | |
| {"qid": "Colon-Bench_1170", "question": "At the 45.0s mark of the video, what intervention is being performed on the pedunculated polyp stalk?", "options": ["A. A dilute epinephrine solution is injected into the center.", "B. A rotatable metallic clip is deployed across the mid-neck.", "C. A thin bipolar probe is applied to the distal segment.", "D. A steel monofilament snare is closed around the mid-stalk.", "E. A blue detachable endoloop is tightened around the base."], "answer": "E", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/f5dd5931a3e5472cb82630cdbbdf4836.mp4"}} | |
| {"qid": "Colon-Bench_1257", "question": "Which of the following best describes the morphology and surface texture of the structure that appears in the upper portion of the lumen?", "options": ["A. A small, yellowish polypoid growth with a pitted surface.", "B. A flat, hyperemic oval-shaped patch with a nodular surface.", "C. A thick, pale cord-like structure with a smooth surface.", "D. A broad, reddened raised lesion with a granular surface.", "E. A thin, erythematous longitudinal fold with a friable surface."], "answer": "C", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/5c6c6ee868b64b809d48f4873351e08c.mp4"}} | |
| {"qid": "Colon-Bench_560", "question": "At the 5.0-second mark of the video, what clinical finding is observed on the colon wall?", "options": ["A. A circumscribed, smooth, grayish plaque", "B. A discrete, multinodular, opaque growth", "C. A solitary, hemispherical, whitish polyp", "D. A focal, irregular, erythematous lesion", "E. A localized, depressed, yellowish patch"], "answer": "D", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/d650ca61562e4a05a64347eb59af81c4.mp4"}} | |
| {"qid": "Colon-Bench_1406", "question": "Regarding the lesion located on the colon wall fold at the start of the clip, what are its color and approximate size under NBI?", "options": ["A. Pinkish and approximately 8mm", "B. Brownish and approximately 5mm", "C. Whitish and approximately 10mm", "D. Dark-brown and approximately 12mm", "E. Reddish and approximately 15mm"], "answer": "C", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/9741459b2a6143e6a1877dedd5eadb1c.mp4"}} | |
| {"qid": "Colon-Bench_156", "question": "What are the morphological characteristics of the lesion identified at the start of the video?", "options": ["A. A focal, circumscribed patch sitting flush with the mucosa", "B. A localized, pedunculated lesion projecting into the lumen", "C. A distinct, submucosal mass bulging beneath the epithelium", "D. A solitary, sessile polyp protruding above the colon wall", "E. A discrete, depressed ulceration extending below the mucosa"], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/b5543a2a52dc467a8d11f6d6bbbbe2a3.mp4"}} | |
| {"qid": "Colon-Bench_1088", "question": "At the 3.0-second mark of the video, what clinical finding becomes clearly visible as narrow-band imaging (NBI) is applied?", "options": ["A. A pedunculated polyp", "B. A mucosal ulcer", "C. A flat lesion", "D. A depressed lesion", "E. A sessile polyp"], "answer": "E", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/9accaecdfea34c389e979e2419a89bd6.mp4"}} | |
| {"qid": "Colon-Bench_690", "question": "When narrow-band imaging (NBI) is activated, what specific surface texture and color are observed on the circumscribed lesion?", "options": ["A. Dark-brownish and reticular", "B. Greenish-brown and granular", "C. Reddish-brown and villous", "D. Light-greenish and smooth", "E. Pale-whitish and pitted"], "answer": "B", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/93b8a2f1d48544db8e1dd36e544bedbd.mp4"}} | |
| {"qid": "Colon-Bench_337", "question": "Regarding the lesion visible immediately at the start of the video, which statement accurately describes its size and location?", "options": ["A. Approximately 5-8 mm, located on a mucosal fold in the lower left quadrant (7 o'clock position)", "B. Approximately 10-12 mm, located on a haustral fold in the upper right quadrant (2 o'clock position)", "C. Approximately 12-15 mm, located on a semilunar fold in the lower right quadrant (4 o'clock position)", "D. Approximately 2-4 mm, located on a rectal fold in the upper left quadrant (11 o'clock position)", "E. Approximately 6-9 mm, located on a mucosal ridge in the upper right quadrant (1 o'clock position)"], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/3358ffaaf23b415fbc85a40e7a1bd0b6.mp4"}} | |
| {"qid": "Colon-Bench_8", "question": "What type of abnormality is visible in the center of the field of view from the very beginning of the video clip?", "options": ["A. A pedunculated polyp", "B. A sessile polyp", "C. A flat lesion", "D. A depressed lesion", "E. A subepithelial mass"], "answer": "B", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/2c898ce48eaf4b1dbab65021bfa2248f.mp4"}} | |
| {"qid": "Colon-Bench_307", "question": "Early in the clip, how are the morphology and surface texture of the lesion described relative to the surrounding mucosa?", "options": ["A. Villous and thickened with a brownish appearance compared to standard tan mucosa", "B. Pitted and depressed with a hyperemic appearance compared to pale yellowish mucosa", "C. Smooth and lobulated with an erythematous appearance compared to pale pink mucosa", "D. Granular and sessile with a yellowish appearance compared to healthy beige mucosa", "E. Friable and ulcerated with a whitish appearance compared to normal pinkish mucosa"], "answer": "C", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/28f331c1cc274c4384d84992276d8bd6.mp4"}} | |
| {"qid": "Colon-Bench_205", "question": "Regarding the approximately 6-8mm lesion seen in the video, what specific clinical characteristic is visible at its tip?", "options": ["A. A thick yellowish cap", "B. A tiny whitish ulceration", "C. A faint pigmented surface", "D. A pale depressed center", "E. A small erythematous spot"], "answer": "E", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/7fa42aacb3504ed58623a97215a07281.mp4"}} | |
| {"qid": "Colon-Bench_505", "question": "What is observed in the video at the 30-second mark?", "options": ["A. An injection needle is positioned into the submucosal layer", "B. A grasping forceps is positioned over the resected specimen", "C. An instrument catheter is positioned adjacent to the lesion", "D. A biopsy forceps is positioned against the inflamed mucosa", "E. A polypectomy snare is positioned around the sessile growth"], "answer": "C", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/0d742884b9ba4b0abc8efaad5de7ccc5.mp4"}} | |
| {"qid": "Colon-Bench_349", "question": "Regarding the temporal visibility of the lesion, when does the clear, diagnostic view begin as opposed to the brief glimpse during insertion?", "options": ["A. At the 19.0-second mark upon withdrawal of the endoscope.", "B. At the 42.0-second mark upon withdrawal of the endoscope.", "C. At the 28.5-second mark upon withdrawal of the endoscope.", "D. At the 15.5-second mark upon withdrawal of the endoscope.", "E. At the 36.5-second mark upon retroflexion of the endoscope."], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/ff7358e71634404dad15ea95335a3d5d.mp4"}} | |
| {"qid": "Colon-Bench_1318", "question": "What is the estimated size and color of the polyp seen in the video?", "options": ["A. 5–8 mm and color slightly more reddish than the surrounding area", "B. 10–12 mm and color yellowish-white with a distinct surface layer", "C. 4–6 mm and color similar to the surrounding healthy mucosa", "D. 7–9 mm and color slightly more erythematous than the colonic wall", "E. 2–3 mm and color much paler than the surrounding healthy tissue"], "answer": "C", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/6b3e61dcfb2a414a9f3e4e43f15a91c0.mp4"}} | |
| {"qid": "Colon-Bench_166", "question": "What type of abnormality is visible on the crest of the haustral fold in this video?", "options": ["A. A slightly elevated mucosal protrusion (Paris IIa).", "B. A flat lesion with a central depression (Paris IIc).", "C. A small, sessile polyp (approximately 4-6mm in size).", "D. A large, pedunculated polyp (approximately 15-20mm in size).", "E. No abnormality detected."], "answer": "C", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/0194e2f2c5af4e2b873a02234f9550bf.mp4"}} | |
| {"qid": "Colon-Bench_758", "question": "At the 0.0s mark of the video, what clinical finding is clearly identified?", "options": ["A. Elevated lesion", "B. Pedunculated polyp", "C. Depressed lesion", "D. Sessile polyp", "E. Flat lesion"], "answer": "D", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/439357cb637b47a7910e3885c666c564.mp4"}} | |
| {"qid": "Colon-Bench_617", "question": "At approximately 2.0 seconds into the clip, what type of abnormality is first clearly identified on a haustral fold?", "options": ["A. A flat lesion", "B. A diminutive polyp", "C. A pedunculated polyp", "D. A mucosal nodule", "E. A sessile polyp"], "answer": "E", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/9da2d40fc21e4a59a9fb8aa8a25dec25.mp4"}} | |
| {"qid": "Colon-Bench_477", "question": "What is immediately visible at the start of the video sequence?", "options": ["A. A medium-sized, sub-pedunculated polyp", "B. A large-sized, pedunculated polyp", "C. A diminutive, flat-elevated polyp", "D. A large-sized, flat-depressed polyp", "E. A small-sized, sessile-appearing polyp"], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/e9757b91529744029342cbf9bb8270cd.mp4"}} | |
| {"qid": "Colon-Bench_473", "question": "Regarding the 3-5mm lesion observed at the start of the clip, what is its position relative to the endoscope?", "options": ["A. Directly adjacent to the endoscope shaft near the anal verge", "B. Positioned opposite the scope curvature at the dentate line", "C. Slightly distal to the lens face within the proximal rectum", "D. Partially obscured by the insertion tube in the distal rectum", "E. Located just behind the scope tip within the rectal vault"], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/b6bd37a11f414f968d396ff31ccd1af5.mp4"}} | |
| {"qid": "Colon-Bench_1010", "question": "Regarding the temporal visibility of the lesion in the clip, which of the following statements is correct?", "options": ["A. A minor, transient view occurs at 00:04s before the stable view begins at 09.0s.", "B. A faint, distant view occurs at 00:01s before the steady view begins at 06.0s.", "C. A brief, partial view occurs at 00:02s before the clear view begins at 07.0s.", "D. A quick, obscured view occurs at 00:05s before the full view begins at 11.0s.", "E. A rapid, peripheral view occurs at 00:03s before the direct view begins at 08.0s."], "answer": "C", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/0eee1856c34f4b5ea339699b1301b6b2.mp4"}} | |
| {"qid": "Colon-Bench_108", "question": "What are the specific clinical characteristics and anatomical context of the lesion seen in the video?", "options": ["A. It is a 9-11 mm opaque white, plaque-like lesion with a border of hyperemic mucosa along the distal edge.", "B. It is a 3-5 mm deep red, well-demarcated lesion with a prominent mucosal fold partially obscuring its base.", "C. It is a 4-6 mm pale pink, smooth-surfaced lesion with a diverticulum adjacent to it on the right.", "D. It is a 5-7 mm creamy white, coarse-textured lesion with a small amount of residual stool noted on the left.", "E. It is a 7-9 mm light yellow, flat-topped lesion with a patch of clear mucus noted on the superior aspect."], "answer": "C", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/daab8581e4ae472caabfd801c315ff9e.mp4"}} | |
| {"qid": "Colon-Bench_1375", "question": "Following the initial observation at 106.0s (01:46), at what timestamp is the same reddish lesion visualized again in the video?", "options": ["A. 163.0s (02:43)", "B. 119.0s (01:59)", "C. 152.0s (02:32)", "D. 175.0s (02:55)", "E. 136.0s (02:16)"], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/819e53efa0944ca5a86e96e137f17407.mp4"}} | |
| {"qid": "Colon-Bench_135", "question": "Which description best characterizes the appearance and size of the detected lesion?", "options": ["A. A flat translucent patch, roughly 6mm in diameter, on healthy intestinal wall", "B. A diminutive yellowish nodule, roughly 4mm in diameter, on normal colonic mucosa", "C. A tiny whitish elevation, roughly 3mm in diameter, on vascular mucosal tissue", "D. A medium pale sessile polyp, roughly 10mm in diameter, on hyperemic mucosa", "E. A small erythematous lesion, roughly 5mm in diameter, on pale pink mucosa"], "answer": "E", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/602ff198f5df431bba4dc3792f7aabd8.mp4"}} | |
| {"qid": "Colon-Bench_500", "question": "During the initial portion of the video under Narrow Band Imaging (NBI), what specific surface characteristics are observed on the lesion?", "options": ["A. A regular surface pattern featuring circular or stellar-shaped structures.", "B. A distorted surface pattern featuring chaotic or fragment-like structures.", "C. A uniform surface pattern featuring faint or non-apparent structures.", "D. A textured surface pattern featuring tubular or gyrus-like structures.", "E. A vascular surface pattern featuring reticular or mesh-like structures."], "answer": "D", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/24fdac2bc354401a8c7f8fd7d404a254.mp4"}} | |
| {"qid": "Colon-Bench_418", "question": "Regarding the lesion visible at the start of the clip on the lower right wall, how are its color and surface texture characterized?", "options": ["A. Pale and smooth", "B. Pink and granular", "C. Yellow and friable", "D. White and villous", "E. Red and nodular"], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/dfd2472e54c8454791d263bef19b997f.mp4"}} | |
| {"qid": "Colon-Bench_720", "question": "Regarding the local anatomy, where is the reddish, plaque-like area specifically located?", "options": ["A. Distal to a prominent mucosal bridge", "B. Inside the lumen of a diverticulum", "C. Adjacent to the appendiceal orifice", "D. Positioned behind a haustral fold", "E. Situated on a haustral fold"], "answer": "E", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/7358d41edac04c059f74df0d49ec4b98.mp4"}} | |
| {"qid": "Colon-Bench_383", "question": "Which finding is identified on the crest of the mucosal fold on the left side of the screen?", "options": ["A. A small, white, shallow ulcer", "B. A tiny, reddish, flat lesion", "C. A small, pale, sessile polyp", "D. A large, yellow, submucosal mass", "E. A medium, pink, pedunculated polyp"], "answer": "C", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/35a3c4c0ed9047d1bf9eac5dcc94b9bc.mp4"}} | |
| {"qid": "Colon-Bench_11", "question": "At approximately 26 seconds into the clip, what change occurs in the visualization of the lesion?", "options": ["A. Narrow Band Imaging (NBI) is applied, highlighting the vascular pattern and demarcating the lesion's boundaries.", "B. Linked Color Imaging (LCI) is applied, enhancing the color differences and clarifying the lesion's lateral extent.", "C. Optical magnification is applied, enlarging the mucosal texture and identifying the lesion's glandular architecture.", "D. Blue Light Imaging (BLI) is applied, improving the surface contrast and defining the lesion's microvascular network.", "E. Indigo carmine dye is applied, accentuating the surface morphology and revealing the lesion's pit pattern."], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/aba9f9030a8c4e9d941db3aca3823761.mp4"}} | |
| {"qid": "Colon-Bench_268", "question": "Which of the following best describes the lesion identified from the beginning of the clip?", "options": ["A. Pedunculated polyp", "B. Sessile polyp (Paris Is)", "C. Flat mucosal elevation (Paris IIb)", "D. No abnormality detected", "E. Depressed lesion (Paris III)"], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/415628d26c0e4d3cbdccbfeecb981194.mp4"}} | |
| {"qid": "Colon-Bench_749", "question": "Which of the following describes the finding visible at the 12.0-second mark of the video?", "options": ["A. A small, flat adenoma with well-defined margins and a regular surface pattern", "B. A depressed malignant ulcer with irregular edges", "C. A sessile serrated lesion with indistinct borders", "D. A large pedunculated polyp with a lobulated surface and spontaneous bleeding", "E. No abnormality detected"], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/ef0fec3bea6c4dfb8be137b6aed48366.mp4"}} | |
| {"qid": "Colon-Bench_54", "question": "Which clinical characteristic describes the mucosal appearance of the lesion at the 7-8 o'clock position relative to the surrounding tissue?", "options": ["A. It is isochromatic to the surrounding mucosa", "B. It is hypochromatic to the surrounding mucosa", "C. It is hyperchromatic to the surrounding mucosa", "D. It is hypervascular to the surrounding mucosa", "E. It is hypovascular to the surrounding mucosa"], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/b78e52615e9246ed919fabec427b2817.mp4"}} | |
| {"qid": "Colon-Bench_1061", "question": "What are the observed clinical characteristics of the lesion seen at the beginning of the clip?", "options": ["A. Pale, sessile morphology, approximately 6-10mm", "B. Pinkish, pedunculated stalk, approximately 5-8mm", "C. Reddish, lobulated head, approximately 10-15mm", "D. Whitish, villous surface, approximately 20-25mm", "E. Yellowish, flat appearance, approximately 2-4mm"], "answer": "C", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/453fd8b900f941e3a2a375ee501d519e.mp4"}} | |
| {"qid": "Colon-Bench_119", "question": "Which finding is identified on a mucosal fold at the start (0.0s) of the video clip?", "options": ["A. A small aphthous erosion appearing as a superficial, white-based crater", "B. A sessile serrated lesion appearing as a subtle, mucus-covered elevation", "C. A discrete ulcerated lesion appearing as a shallow, punched-out depression", "D. A localized vascular ectasia appearing as a bright, cherry-red lesion", "E. A diminutive hyperplastic polyp appearing as a smooth, dome-shaped nodule"], "answer": "C", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/3358ffaaf23b415fbc85a40e7a1bd0b6.mp4"}} | |
| {"qid": "Colon-Bench_216", "question": "What specific morphology and Paris classification are confirmed as the polyp is examined from multiple angles throughout the clip?", "options": ["A. Sessile morphology (Paris classification Is)", "B. Subpedunculated morphology (Paris classification Isp)", "C. Flat morphology (Paris classification IIa)", "D. Depressed morphology (Paris classification IIc)", "E. Pedunculated morphology (Paris classification Ip)"], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/01dc6e159a7c436093a7a6ec291036f1.mp4"}} | |
| {"qid": "Colon-Bench_1413", "question": "What finding is identified at the start of the video (0.0s) located on a transverse fold?", "options": ["A. Flat adenoma", "B. Sessile polyp", "C. Pedunculated polyp", "D. Small diverticulum", "E. Submucosal mass"], "answer": "B", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/c9da16a80d834f848d0fce06fae41e0e.mp4"}} | |
| {"qid": "Colon-Bench_1434", "question": "At the 3.0-second mark of the clip, what specific finding becomes clearly visible?", "options": ["A. No abnormality detected", "B. A Paris type IIb flat lesion", "C. A small, sessile polyp", "D. A pedunculated polyp", "E. A mucosal suction mark"], "answer": "C", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/e8008b4d24bc4ed6b25d6a93bb76238f.mp4"}} | |
| {"qid": "Colon-Bench_851", "question": "What specific abnormality is identified immediately at the start of the video (0.0s)?", "options": ["A. Pedunculated polyp", "B. Submucosal mass", "C. Sessile polyp", "D. Flat lesion", "E. Depressed lesion"], "answer": "C", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/0eaaa92fea2b40d4ae94a5636d48b0d3.mp4"}} | |
| {"qid": "Colon-Bench_756", "question": "At the 37.0-second mark, what clinical finding becomes visible on the crest of a haustral fold?", "options": ["A. A depressed mucosal lesion (DML)", "B. A pedunculated adenomatous polyp (PAP)", "C. A sessile serrated lesion (SSL)", "D. A small tubular adenoma (STA)", "E. A sessile hyperplastic polyp (SHP)"], "answer": "C", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/b2308790684a47e7bef7bb207cbecc19.mp4"}} | |
| {"qid": "Colon-Bench_1094", "question": "In the segment starting at 6.0 seconds, what are the observed color and specific anatomical location of the lesion?", "options": ["A. Pale whitish lesion located on the base of a haustral fold", "B. Yellowish-orange lesion located on the crest of a haustral fold", "C. Whitish-opaque lesion located on the slope of a haustral fold", "D. Reddish-pink lesion located on the surface of a semilunar fold", "E. Bright reddish lesion located on the edge of a mucosal fold"], "answer": "B", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/6d7e016beea64795be831df3d1f8cc25.mp4"}} | |
| {"qid": "Colon-Bench_685", "question": "How is the morphology and appearance of the lesion described relative to its surroundings?", "options": ["A. It has a depressed profile and mucosal thickening", "B. It has an irregular shape and surface discoloration", "C. It has an oval configuration and granular texture", "D. It has a well-defined border and central ulceration", "E. It has a lobulated margin and vascular congestion"], "answer": "B", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/2bc0d36556f34aabbbcc6d5e67093b68.mp4"}} | |
| {"qid": "Colon-Bench_544", "question": "At the 00:38 mark in the video, which procedural action is performed on the lesion?", "options": ["A. A stainless steel snare is positioned directly around the lesion", "B. A monopolar cautery probe is applied directly to the lesion", "C. A blue-dyed lifting agent is injected underneath the lesion", "D. A cold biopsy forceps is closed directly onto the lesion", "E. A clear water irrigation is sprayed directly across the lesion"], "answer": "C", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/b5ceaabeeb78440c877599408ba10c63.mp4"}} | |
| {"qid": "Colon-Bench_762", "question": "Throughout the duration of the segment, what specific instrument or action is observed in relation to the target lesion?", "options": ["A. Placement of a submucosal injection needle into the lesion", "B. Deployment of a mechanical hemostatic clip onto the lesion", "C. Application of an argon plasma coagulation probe to the lesion", "D. Advancement of a cold biopsy forceps toward the lesion", "E. Positioning of an electrosurgical snare around the lesion"], "answer": "E", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/1ccc8946c01f40a79ba9de3e077c178f.mp4"}} | |
| {"qid": "Colon-Bench_1087", "question": "At approximately 1.0s into the video, what finding is first clearly visible on the right side of the screen?", "options": ["A. A diminutive, flat lesion", "B. A small, ulcerated nodule", "C. A large, stalked polyp", "D. A small, sessile polyp", "E. A tiny, granular lesion"], "answer": "D", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/174cba0af413489e83630691dd593554.mp4"}} | |
| {"qid": "Colon-Bench_1028", "question": "Regarding the mucosal architecture around the rectal lesion seen at the start of the clip, which of the following best describes the appearance of the mucosal folds?", "options": ["A. Mucosal folds widening and flattening over a deep submucosal elevation", "B. Mucosal folds thickening and swelling around the necrotic crater base", "C. Mucosal folds tapering and clubbing near the peripheral ulcerated rim", "D. Mucosal folds converging and radiating towards a central fibrotic area", "E. Mucosal folds disappearing and smoothing out towards the central bulge"], "answer": "D", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/0692e0bac0e64dfbbb659faa6334155b.mp4"}} | |
| {"qid": "Colon-Bench_447", "question": "What type of finding is identified at the bottom right of the screen (5 o'clock position) during the inspection?", "options": ["A. Depressed lesion", "B. Mucosal nodule", "C. Flat lesion", "D. Pedunculated polyp", "E. Sessile polyp"], "answer": "E", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/6a7e262ff9284311976df43dfd60d2b8.mp4"}} | |
| {"qid": "Colon-Bench_1382", "question": "At the 60.0-second mark of the video, what specific finding is first observed on the haustral fold?", "options": ["A. A depressed lesion (Paris IIc)", "B. A flat-elevated lesion (Paris IIa)", "C. No abnormality detected", "D. A pedunculated polyp (Paris Ip)", "E. A small sessile polyp"], "answer": "E", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/aef965ddb21c4c0abb525da161dfba2b.mp4"}} | |
| {"qid": "Colon-Bench_1019", "question": "When viewed under Narrow Band Imaging (NBI), what specific characteristic does the lesion on the colonic fold exhibit compared to the surrounding mucosa?", "options": ["A. A distinct smooth or granular surface appearance.", "B. A distinct brownish or greenish mucosal color.", "C. A distinct thickened or tortuous vessel pattern.", "D. A distinct nodular or lobulated surface texture.", "E. A distinct oval or circular mucosal pit pattern."], "answer": "D", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/fa43bd6c2e4c43388450f54c6480fc77.mp4"}} | |
| {"qid": "Colon-Bench_2", "question": "Based on the visual description, what are the estimated size and surface characteristics of the identified lesion?", "options": ["A. Approximately 8-10 mm in size with a slightly pinkish, hyperemic surface", "B. Approximately 2-4 mm in size with a slightly yellowish, xanthomatous surface", "C. Approximately 5-8 mm in size with a slightly reddish, erythematous surface", "D. Approximately 15-20 mm in size with a slightly dusky, hypervascular surface", "E. Approximately 10-12 mm in size with a slightly whitish, opalescent surface"], "answer": "C", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/362b6b5feb33404580a6d4b7542c24e2.mp4"}} | |
| {"qid": "Colon-Bench_1110", "question": "Based on the events described, which procedural action is performed later in the video clip?", "options": ["A. Endoscopic clip closure", "B. Cold snare polypectomy", "C. Hot snare polypectomy", "D. Cold forceps biopsy", "E. Heat probe coagulation"], "answer": "B", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/a7218982c96340d08bd5f7a706646ae8.mp4"}} | |
| {"qid": "Colon-Bench_831", "question": "At 1.0s, a lesion becomes visible; what are its diameter and color relative to the surrounding mucosa?", "options": ["A. Approximately 3-5mm in diameter and similar in color to the surrounding mucosa", "B. Approximately 1-2mm in diameter and more hyperemic in color than the surrounding mucosa", "C. Approximately 6-8mm in diameter and slightly paler in color than the surrounding mucosa", "D. Approximately 10-12mm in diameter and similar in color to the surrounding mucosa", "E. Approximately 15-20mm in diameter and more yellowish in color than the surrounding mucosa"], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/4c19e3ca3f494f5b89a7c06e654fc7a9.mp4"}} | |
| {"qid": "Colon-Bench_1005", "question": "What specific feature is identified at the lower margin of the lesion?", "options": ["A. Three tiny circular spots of fibrin", "B. Several thin adherent films of mucus", "C. Four small discrete bumps of scarring", "D. One large irregular patch of erythema", "E. Two small focal areas of hemorrhage"], "answer": "E", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/dfe823c8ef6a445f8365928321ba83bb.mp4"}} | |
| {"qid": "Colon-Bench_1316", "question": "During the clear diagnostic view of the lesion, which clinical characteristics are observed regarding its surface and texture?", "options": ["A. Smooth surface with a pillow-like appearance", "B. Pitted surface with a crater-like appearance", "C. Granular surface with a pebble-like appearance", "D. Lobulated surface with a brain-like appearance", "E. Villous surface with a frond-like appearance"], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/0eee1856c34f4b5ea339699b1301b6b2.mp4"}} | |
| {"qid": "Colon-Bench_1468", "question": "What type of abnormality is identified on the right side of the screen as the colonoscope is being withdrawn?", "options": ["A. A subepithelial mass with a yellowish, smooth mucosa", "B. A sessile polyp with a pinkish, granular surface", "C. A depressed lesion with a pale, ulcerated base", "D. A pedunculated polyp with a reddish, multilobulated head", "E. A flat-elevated polyp with a whitish, pitted surface"], "answer": "D", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/fba64caf50b3466f8f4d68e6a9a9df9c.mp4"}} | |
| {"qid": "Colon-Bench_439", "question": "Where is the abnormality positioned within the colon's anatomy, and what is observed at one end of it?", "options": ["A. Inside the base of a diverticular sac with hard stool or debris", "B. Behind the curve of a flexural area with active bleeding or oozing", "C. Beside the rim of the ileocecal valve with mucosal edema or redness", "D. Along the crest of a haustral fold with white fibrin or exudate", "E. Across the edge of a semilunar fold with thick mucus or bile"], "answer": "D", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/b4cc2939e0124327a3099cc4397f0b8f.mp4"}} | |
| {"qid": "Colon-Bench_179", "question": "What is the estimated size of the smooth, reddish lesion identified in the first few seconds of the video clip?", "options": ["A. 5 to 10 mm", "B. 2-4 mm", "C. 15 to 20 mm", "D. 20 to 25 mm", "E. 10 to 15 mm"], "answer": "B", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/1a848e5bfec74352b84a963df5a2576d.mp4"}} | |
| {"qid": "Colon-Bench_93", "question": "Which finding is visible on the upper left wall of the colon lumen at the 0.0s mark?", "options": ["A. A focal, bright red vascular lesion", "B. A sessile, creamy white serrated lesion", "C. A solitary, light pink mucosal nodule", "D. A raised, dull yellow submucosal mass", "E. A flat, pale gray inflammatory patch"], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/b5543a2a52dc467a8d11f6d6bbbbe2a3.mp4"}} | |
| {"qid": "Colon-Bench_1325", "question": "Based on the visual inspection of the mucosal lesion, which clinical characteristics are explicitly observed?", "options": ["A. A granular, nodular surface texture and slightly erythematous coloration", "B. A smooth, featureless surface texture and distinctly pallid coloration", "C. A lobulated, cerebriform surface texture and notably hyperpigmented coloration", "D. A pitted, irregular surface texture and faintly opalescent coloration", "E. A villous, friable surface texture and intensely hyperemic coloration"], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/2598107427024abe95fe30929c902822.mp4"}} | |
| {"qid": "Colon-Bench_511", "question": "In which specific location is the lesion seen at the beginning of the video clip?", "options": ["A. On a haustral fold on the right side of the lumen", "B. On a haustral fold on the lower side of the lumen", "C. In a mucosal valley on the left side of the lumen", "D. On a haustral fold on the upper side of the lumen", "E. On a haustral fold on the left side of the lumen"], "answer": "E", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/2bc0d36556f34aabbbcc6d5e67093b68.mp4"}} | |
| {"qid": "Colon-Bench_910", "question": "At the 1.0s mark of the video, what clinical finding is first identified?", "options": ["A. A large pedunculated polyp", "B. A small flat lesion", "C. A large ulcerated mass", "D. A small sessile polyp", "E. A tiny depressed nodule"], "answer": "D", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/304d93d1c236475f97e42991288df0c7.mp4"}} | |
| {"qid": "Colon-Bench_681", "question": "As the camera angle changes at approximately 43 seconds, what specific morphological detail is revealed about the lesion?", "options": ["A. A distinct stalk", "B. A positive lifting sign", "C. A central ulceration (Paris III)", "D. A broad, sessile base", "E. A pit pattern suggestive of hyperplastic features"], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/f66df0f744e84b02870faf6b80bd4668.mp4"}} | |
| {"qid": "Colon-Bench_433", "question": "What is the specific location of the identified lesion relative to the colonic anatomy?", "options": ["A. At the ileocecal valve", "B. In the cecal base", "C. On a haustral fold", "D. Behind a mucosal fold", "E. At the hepatic flexure"], "answer": "C", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/f81aa5fcaefe4007a4343f056fada07c.mp4"}} | |
| {"qid": "Colon-Bench_607", "question": "How does the lesion appear when viewed under Narrow Band Imaging (NBI) compared to its surroundings?", "options": ["A. Deep purplish-brown and discernible against the adjacent mucosa", "B. Dull brownish-black and distinguishable from the surrounding mucosa", "C. Bright yellowish-tan and prominent against the background mucosa", "D. Pale greenish-white and distinct from the darker mucosa", "E. Deep reddish-brown and well-demarcated from the normal mucosa"], "answer": "D", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/4d0a5b54368142539fd704834022aa64.mp4"}} | |
| {"qid": "Colon-Bench_3", "question": "Based on the visual evidence starting at 22.0s, what are the estimated size and anatomical position of the observed lesion?", "options": ["A. Approximately 6-10mm, situated on a haustral fold", "B. Approximately 12-15mm, situated on the splenic flexure", "C. Approximately 3-5mm, situated on the ileocecal valve", "D. Approximately 1-2mm, situated near the hepatic flexure", "E. Approximately 20-25mm, situated at the cecal base"], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/74a16801fa8548898de1f6f37734f1af.mp4"}} | |
| {"qid": "Colon-Bench_1216", "question": "Which of the following best describes the morphological appearance and color of the lesion identified in the lower left quadrant?", "options": ["A. Translucent, pedunculated growth with a smooth surface", "B. Pale, elevated nodule with smooth borders", "C. Bright red, flat lesion with an irregular shape", "D. Yellowish, depressed lesion with indistinct margins", "E. Deep purple, sessile mass with a granular surface"], "answer": "C", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/03523ebd77cf44dcabc8718879fe4f5f.mp4"}} | |
| {"qid": "Colon-Bench_945", "question": "From the beginning of the clip, what specific finding is observed on the right colon wall?", "options": ["A. A subepithelial bulge", "B. A pedunculated polyp (Paris Ip)", "C. A completely flat (Paris IIb) lesion", "D. A sessile polyp", "E. No abnormality detected"], "answer": "D", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/2e4b5c0bb4d14fe98bc650e62bd19c0f.mp4"}} | |
| {"qid": "Colon-Bench_114", "question": "A change in the imaging mode occurs at the 0:20 mark. What is the primary method and result of this change as observed in the video?", "options": ["A. Linked Color Imaging (LCI) is applied to enhance color differences and mucosal details.", "B. Narrow Band Imaging (NBI) is applied to highlight surface texture and vascular pattern.", "C. Blue Laser Imaging (BLI) is applied to improve mucosal contrast and vessel visibility.", "D. i-SCAN Optical Enhancement (OE) is applied to accentuate mucosal surfaces and vascularity.", "E. Fuji Intelligent Color Enhancement (FICE) is applied to show pit patterns and vessel morphology."], "answer": "B", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/689a7fb246454e45a7b34ab1b913e50f.mp4"}} | |
| {"qid": "Colon-Bench_42", "question": "Based on the visual evidence, where is the lesion located and what is its relationship to the surrounding anatomy?", "options": ["A. It is situated on a fold on the right colon wall", "B. It is located behind a fold on the splenic flexure wall", "C. It is positioned near a fold on the sigmoid colon wall", "D. It is found across a fold on the transverse colon wall", "E. It is situated above a fold on the descending colon wall"], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/84bafcaa72dc4971b0e3eab92296737e.mp4"}} | |
| {"qid": "Colon-Bench_555", "question": "Regarding the lesion identified at the 74-second mark, how does its surface texture and color compare to the surrounding healthy mucosa?", "options": ["A. It is erythematous (reddish) with a lobulated or granular texture.", "B. It is violaceous (purplish) with a firm or multinodular texture.", "C. It is opalescent (cloudy) with a pitted or reticulated texture.", "D. It is pale (whitish) with a smooth or featureless texture.", "E. It is hyperemic (congested) with a villous or frond-like texture."], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/b2c41e4158f54230a7dc54e49dde2072.mp4"}} | |
| {"qid": "Colon-Bench_291", "question": "What primary clinical finding is observed on the left colon wall?", "options": ["A. A flat, erythematous lesion", "B. A sessile, whitish polyp", "C. A raised, yellowish patch", "D. A depressed, pale-colored area", "E. A pedunculated, pinkish nodule"], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/7358d41edac04c059f74df0d49ec4b98.mp4"}} | |
| {"qid": "Colon-Bench_706", "question": "While observing the sessile polypoid lesion, what dynamic finding is noted at the base of the abnormality?", "options": ["A. White foam bubbling from the base of the polyp", "B. Fresh blood oozing from the base of the polyp", "C. Thick bile flowing from the base of the polyp", "D. Serous liquid seeping from the base of the polyp", "E. Clear mucus draining from the base of the polyp"], "answer": "B", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/b448548e20e34c1fa27334ab191c303e.mp4"}} | |
| {"qid": "Colon-Bench_157", "question": "Which procedural intervention is documented as being performed on the lesion in this video?", "options": ["A. Endoscopic mucosal resection with a cap", "B. Submucosal injection of a lifting agent", "C. Forceps biopsy sampling", "D. Snare polypectomy", "E. Argon plasma coagulation (APC)"], "answer": "D", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/f711a4da39614a5cb7c56fbe645f027d.mp4"}} | |
| {"qid": "Colon-Bench_253", "question": "What type of finding is visible immediately at the start of the video clip on a colonic fold?", "options": ["A. A medium, lobulated, yellowish villous polyp", "B. A tiny, smooth, whitish subpedunculated polyp", "C. A small, flat, reddish sessile polyp", "D. A minute, granular, tan serrated polyp", "E. A large, raised, pale pedunculated polyp"], "answer": "C", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/81966ea5faaf4801978b44f2b9106394.mp4"}} | |
| {"qid": "Colon-Bench_939", "question": "How does the color and size of the observed lesion compare to the surrounding anatomy?", "options": ["A. It is hypopigmented and approximately 3-5mm in size", "B. It is violaceous and approximately 20-25mm in size", "C. It is hyperemic and approximately 2-4mm in size", "D. It is yellowish and approximately 12-15mm in size", "E. It is erythematous and approximately 10-12mm in size"], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/35a3c4c0ed9047d1bf9eac5dcc94b9bc.mp4"}} | |
| {"qid": "Colon-Bench_1358", "question": "What distinct finding becomes visible at the 1:24 mark of the video?", "options": ["A. A large sessile adenoma with a granular surface and a pale, firm base.", "B. A large pedunculated polyp with a thick stalk and a reddish, lobulated head.", "C. A small sessile polyp with a mucous cap and a flat, hazy surface.", "D. A large ulcerated mass with a central depression and a firm, raised border.", "E. A medium semi-pedunculated polyp with a thin stalk and a pale, smooth head."], "answer": "B", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/d0915a630d13488ea40ca2add3c7d6e1.mp4"}} | |
| {"qid": "Colon-Bench_804", "question": "Starting at 139 seconds, how does the visual appearance of the polyp change when Narrow Band Imaging (NBI) is activated?", "options": ["A. The apical surface topography of the polyp is enhanced.", "B. The underlying vascular network of the polyp is emphasized.", "C. The central brownish coloration of the polyp is intensified.", "D. The surface pit pattern of the polyp is highlighted.", "E. The peripheral mucosal margin of the polyp is demarcated."], "answer": "D", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/84bd953bc40a459b85113aa12913c456.mp4"}} | |
| {"qid": "Colon-Bench_926", "question": "What type of lesion is identified from the start of the video clip?", "options": ["A. A subepithelial mass", "B. A sessile polyp", "C. A flat lesion", "D. A pedunculated polyp", "E. A depressed lesion"], "answer": "B", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/95d5e9f8e6404768b6117f8fec560980.mp4"}} | |
| {"qid": "Colon-Bench_632", "question": "When the imaging mode switches to narrow-band imaging (NBI), how does the appearance of the lesion change relative to the surrounding mucosa?", "options": ["A. The lesion appears dimmer and bluish compared to the greenish mucosa", "B. The lesion appears paler and greenish compared to the bluish mucosa", "C. The lesion appears brighter and yellowish compared to the cyan mucosa", "D. The lesion appears darker and brownish compared to the purple mucosa", "E. The lesion appears lighter and whitish compared to the greyish mucosa"], "answer": "D", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/68620e9448c6408f84b06710eda86fb4.mp4"}} | |
| {"qid": "Colon-Bench_63", "question": "Based on the visual characteristics described, how is the lesion attached to the colon wall?", "options": ["A. Via a thick stalk", "B. Via a thin pedicle", "C. Via a short neck", "D. Via a broad base", "E. Via a long stalk"], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/9b8c80ab21954e868648cc72d5d19f07.mp4"}} | |
| {"qid": "Colon-Bench_1287", "question": "At the 10.0-second mark, where is the identified lesion situated and what are its surface characteristics?", "options": ["A. Located between two haustral folds with a granular surface", "B. Located behind the splenic flexure fold with a pitted surface", "C. Located on the crest of a haustral fold with a smooth surface", "D. Located along the distal rectal wall with a friable surface", "E. Located on the wall of the sigmoid colon with a nodular surface"], "answer": "C", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/a729f528f61f450ba485127903993709.mp4"}} | |
| {"qid": "Colon-Bench_1082", "question": "What are the physical dimensions and color characteristics of the lesion identified at the 0.0s mark?", "options": ["A. Approximately 1-3 mm in diameter and bright red", "B. Approximately 8-10 mm in diameter and dark red", "C. Approximately 2-4 mm in diameter and pearly white", "D. Approximately 7-9 mm in diameter and dull yellow", "E. Approximately 4-6 mm in diameter and pale pink"], "answer": "E", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/b3b569a8de014dcb948d112a29e87b4f.mp4"}} | |
| {"qid": "Colon-Bench_628", "question": "Which of the following best describes the clinical characteristics and size of the lesion first identified at 18.0 seconds?", "options": ["A. Small (7-9 mm) and erythematous or pinkish with a nodular surface", "B. Diminutive (1-2 mm) and translucent or clear with a pitted surface", "C. Diminutive (3-5 mm) and pale or whitish with a smooth surface", "D. Large (10-20 mm) and yellowish or pale yellow with a flat surface", "E. Small (6-8 mm) and reddish or hyperemic with a granular surface"], "answer": "C", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/4d0b09660c0a480da793a30a3102c5b2.mp4"}} | |
| {"qid": "Colon-Bench_48", "question": "According to the visual characteristics observed, what is the estimated size and shape of the lesion located on the haustral fold?", "options": ["A. 4-6mm and round", "B. 8-10mm and oval", "C. 1-2mm and raised", "D. 7-9mm and sessile", "E. 3-5mm and flat"], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/6a7e262ff9284311976df43dfd60d2b8.mp4"}} | |
| {"qid": "Colon-Bench_1120", "question": "Which specific morphological characteristic is described for the reddish patch located on the haustral fold?", "options": ["A. A subepithelial appearance with intact overlying vasculature.", "B. A uniform, flat surface (Paris IIb) with distinct, smooth borders.", "C. A sessile (Paris Is) shape with a lobulated surface.", "D. A slightly elevated (Paris IIa) morphology with a granular texture.", "E. A central depression suggestive of shallow ulceration or recent trauma."], "answer": "E", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/291c8dfac99e482d8a062928c147e47b.mp4"}} | |
| {"qid": "Colon-Bench_649", "question": "In the video, what color and surface texture does the lesion display under the enhancement mode (NBI) compared to the surrounding mucosa?", "options": ["A. Whitish color with a smooth, rounded surface", "B. Grayish color with a thick, tubular surface", "C. Greenish color with a flat, reticular surface", "D. Pale color with a ridged, villous surface", "E. Brownish color with a granular, pitted surface"], "answer": "E", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/62571dfdba7d4925a20603298cad06e4.mp4"}} | |
| {"qid": "Colon-Bench_592", "question": "Which statement accurately describes the color and surface texture of the identified lesion?", "options": ["A. It appears yellowish and opaque with a mucus-covered, clouded surface.", "B. It appears reddish and hyperemic with a granular, nodular surface.", "C. It appears dark and brownish with a pitted, uneven surface.", "D. It appears erythematous and bright with a friable, erosive surface.", "E. It appears pale and whitish with a smooth, regular surface."], "answer": "E", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/9b02e181cfd84947912b32d9c98aa19a.mp4"}} | |
| {"qid": "Colon-Bench_1274", "question": "Regarding the visual appearance of the lesion first seen at 28.0s, what are its surface and color characteristics?", "options": ["A. A granular surface and a hyperemic color", "B. A lobulated surface and a pale color", "C. A smooth surface and an isochromatic color", "D. A friable surface and an erythematous color", "E. A pitted surface and a variegated color"], "answer": "C", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/a66c05dd615345ce8745cb78320c9cd7.mp4"}} | |
| {"qid": "Colon-Bench_702", "question": "What is the estimated size and color of the lesion that appears at the 56-second mark relative to the surrounding tissue?", "options": ["A. Approximately 20-25 mm and hyperpigmented (dark brown) in color", "B. Approximately 3-5 mm and pale/white in color", "C. Approximately 1-2 mm and yellowish in color", "D. Approximately 8-10 mm and isochromatic (pinkish) in color", "E. Approximately 12-15 mm and erythematous (bright red) in color"], "answer": "D", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/fb7fb230a8e34d189bb4d097f761662f.mp4"}} | |
| {"qid": "Colon-Bench_258", "question": "At which timestamps in the video sequence is the lesion revisited for a closer examination to confirm its morphology?", "options": ["A. At 00:24 and 01:40", "B. At 00:32 and 01:16", "C. At 00:45 and 01:22", "D. At 00:12 and 00:56", "E. At 01:05 and 01:54"], "answer": "B", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/0194e2f2c5af4e2b873a02234f9550bf.mp4"}} | |
| {"qid": "Colon-Bench_610", "question": "Based on the visual assessment provided in the video, what are the color and approximate size of the identified lesion?", "options": ["A. Pale (hypopigmented) and 8-10 mm in diameter", "B. Pinkish (isochromic) and 15-20 mm in diameter", "C. Reddish (erythematous) and 5-7 mm in diameter", "D. Whitish (opalescent) and 1-3 mm in diameter", "E. Yellowish (xanthomatous) and 2-4 mm in diameter"], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/3ba3ab8c5f484f1486a27829d9b2bd34.mp4"}} | |
| {"qid": "Colon-Bench_612", "question": "Based on the sequence of events, what action is performed after the lesion becomes clearly visible on the left side of the lumen?", "options": ["A. Irrigation of the lesion with a catheter", "B. Ablation of the lesion with a probe", "C. Sampling of the lesion with a forceps", "D. Injection of the lesion with a needle", "E. Engagement of the lesion with a snare"], "answer": "E", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/baa3a76648c64568b67af0408fb734ef.mp4"}} | |
| {"qid": "Colon-Bench_1423", "question": "Regarding the lesion that becomes visible at 11.0s, which of the following best describes its appearance and surface characteristics?", "options": ["A. Distinctly yellowish with a villous surface texture", "B. Slightly erythematous with a granular surface texture", "C. Uniformly opalescent with a pitted surface texture", "D. Mildly hyperemic with a nodular surface texture", "E. Moderately blanched with a smooth surface texture"], "answer": "B", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/6e0c6b9aa4cd488a9852526aa6725cef.mp4"}} | |
| {"qid": "Colon-Bench_1342", "question": "Which of the following best describes the morphology and size of the vascular lesion identified in the video?", "options": ["A. A lobulated, dark maroon-red, nodular lesion measuring 4-6 mm in diameter", "B. A radiating, bright ruby-red, stellate lesion measuring 1-2 mm in diameter", "C. A discrete, pale pinkish-red, raised lesion measuring 2-4 mm in diameter", "D. A focal, bright cherry-red, flat lesion measuring 3-5 mm in diameter", "E. A circular, deep purple-red, elevated lesion measuring 6-8 mm in diameter"], "answer": "D", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/f08bc833f0e44fabb932960b88dd15da.mp4"}} | |
| {"qid": "Colon-Bench_1152", "question": "Which of the following best describes the appearance and vascular pattern of the lesion observed?", "options": ["A. A flat, whitish gray lesion with a silvery, star-like pattern of mucosal pits", "B. A depressed, dark brown lesion with a blackish, mesh-like pattern of distorted vessels", "C. A sessile, pale yellow lesion with a whitish, cloud-like pattern of enlarged crypts", "D. A raised, reddish brown lesion with a brownish, grid-like pattern of tortuous vessels", "E. A flat, bright red lesion with a cherry-red, fern-like pattern of dilated vessels"], "answer": "E", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/4e856d7eaa264ca8accbf9ece5d733e2.mp4"}} | |
| {"qid": "Colon-Bench_674", "question": "Which of the following describes the visual characteristics of the polyp observed at the beginning of the video?", "options": ["A. Slightly erythematous with a smooth surface", "B. Hyperemic with an ulcerated surface", "C. Ischromatic with a granular surface", "D. Pale with a villous surface", "E. Yellowish with a micronodular surface"], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/c59f7aab76eb4569a083affc76fdf3d0.mp4"}} | |
| {"qid": "Colon-Bench_28", "question": "Which of the following best describes the morphology and appearance of the lesion seen at the start of the clip?", "options": ["A. Tiny with a granular, flat-elevated morphology and pale coloration relative to the adjacent mucosa", "B. Subcentimeter with a villous, sessile morphology and yellowish hue relative to the colonic mucosa", "C. Small with a lobulated, pedunculated morphology and mild erythema relative to the nearby mucosa", "D. Diminutive with a smooth, dome-shaped morphology and coloration similar to the surrounding mucosa", "E. Minute with a pitted, slightly depressed morphology and hyperemic surface relative to the local mucosa"], "answer": "D", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/24ea6ca5bdd0477b90d5e8939ac3ac38.mp4"}} | |
| {"qid": "Colon-Bench_1049", "question": "According to the sequence of events in the clip, what is visualized immediately after the mechanical strangulation and resection of the lesion?", "options": ["A. The resection defect (ulcer base)", "B. The mucosal margin (healthy tissue)", "C. The detached polyp (excised tissue)", "D. The clipping device (metallic clip)", "E. The bleeding site (active oozing)"], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/4f5de4c043364530bd2001d923181213.mp4"}} | |
| {"qid": "Colon-Bench_849", "question": "Regarding the appearance and surface texture of the lesion, which of the following is correct?", "options": ["A. The lesion is intensely hyperemic with a villous surface.", "B. The lesion is slightly erythematous with a smooth surface.", "C. The lesion is notably translucent with a lobulated surface.", "D. The lesion is significantly pale with a granular surface.", "E. The lesion is distinctly yellowish with a nodular surface."], "answer": "B", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/0194e2f2c5af4e2b873a02234f9550bf.mp4"}} | |
| {"qid": "Colon-Bench_103", "question": "Which surface texture and imaging mode are used to examine the lesion throughout the duration of the clip?", "options": ["A. Villous surface texture using magnification imaging", "B. Lobulated surface texture using blue-light imaging", "C. Granular surface texture using near-focus imaging", "D. Smooth surface texture using white-light imaging", "E. Nodular surface texture using narrow-band imaging"], "answer": "C", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/d89af64012c34cb28eb288d11245ebed.mp4"}} | |
| {"qid": "Colon-Bench_423", "question": "What finding is identified on the right side of the screen at the very beginning (0.0s) of the video clip?", "options": ["A. A small sessile polyp", "B. No abnormality detected", "C. A prominent cluster of suction marks", "D. A small pedunculated polyp", "E. A flat (IIb) mucosal lesion"], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/f71f88a037c84dbea539fb76a11d986a.mp4"}} | |
| {"qid": "Colon-Bench_1334", "question": "Which instrument is introduced into the field of view following the examination of the lesion's surface vascular pattern with narrow-band imaging (NBI)?", "options": ["A. A probe for ablation", "B. A snare for resection", "C. A forceps for biopsy", "D. A needle for injection", "E. A clip for hemostasis"], "answer": "B", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/387cae36af1749ad9d1158c66c5d756e.mp4"}} | |
| {"qid": "Colon-Bench_484", "question": "Which maneuver is performed to bring the obscured lesion into full view within the lumen?", "options": ["A. Being suctioned and mobilized from the posterior wall of a haustral fold.", "B. Being snared and retracted from the proximal side of a fold.", "C. Being hooked and deflected from the distal aspect of a colonic fold.", "D. Being pinned and maneuvered from the lateral surface of a mucosal fold.", "E. Being grasped and displaced from the inferior margin of a semilunar fold."], "answer": "B", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/bd793c0e6efa4f838e27eeadf3a7f0b9.mp4"}} | |
| {"qid": "Colon-Bench_468", "question": "What are the approximate size and color of the slightly elevated lesion seen in the video?", "options": ["A. 7-8 mm in diameter and pinkish-white", "B. 12-13 mm in diameter and creamy-white", "C. 9-10 mm in diameter and reddish-brown", "D. 4-6 mm in diameter and yellowish-white", "E. 2-3 mm in diameter and pale-pinkish"], "answer": "D", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/1cb8fd41f5b642e6afcd7f5f6a5652ee.mp4"}} | |
| {"qid": "Colon-Bench_541", "question": "What are the surface characteristics and timing of the lesion's presentation?", "options": ["A. Spotted behind a fold and appears mildly depressed with a pitted mucosal appearance", "B. Immediately visible and appears slightly elevated with a smooth surface texture", "C. Seen after washing and appears completely flat with a granular surface pattern", "D. Noted during insufflation and appears clearly broad-based with an irregular surface contour", "E. Found upon withdrawal and appears predominantly sessile with a lobulated surface texture"], "answer": "B", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/bd5fe1028007488293ca7de548351c7d.mp4"}} | |
| {"qid": "Colon-Bench_480", "question": "Which of the following describes the surface characteristics and margins of the lesion seen in the video?", "options": ["A. An opaque, villous surface with broad, circumscribed margins", "B. A pitted, ulcerated surface with sharp, indurated margins", "C. A granular, friable surface with sloping, blurred margins", "D. A smooth, erythematous surface with flat, distinct margins", "E. An irregular, nodular surface with raised, rolled margins"], "answer": "E", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/af7756d6140e490597840f79f8a87c72.mp4"}} | |
| {"qid": "Colon-Bench_301", "question": "Regarding the surface texture and color of the 4-6mm lesion, which observation is made in the clip?", "options": ["A. A granular surface that is slightly paler than the surrounding mucosa", "B. A villous surface that is more yellowish than the surrounding mucosa", "C. A pitted surface that is noticeably darker than the surrounding mucosa", "D. A smooth surface that is similar in color to the surrounding mucosa", "E. A nodular surface that is distinctly redder than the surrounding mucosa"], "answer": "D", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/f71f88a037c84dbea539fb76a11d986a.mp4"}} | |
| {"qid": "Colon-Bench_884", "question": "Regarding the lesion that appears at 1.0s, what is its estimated size and surface morphology?", "options": ["A. 4-6mm with a smooth, rounded surface", "B. 2-3mm with a smooth surface", "C. 7-9mm with a nodular surface", "D. 4-6mm with a granular surface", "E. 1-3mm with a friable surface"], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/67254b36280c42d0832dfdafba1b3204.mp4"}} | |
| {"qid": "Colon-Bench_1424", "question": "How is the surface of the lesion described once it becomes clearly visible?", "options": ["A. Reddish and erythematous with a distinct vascular pattern", "B. Pinkish and edematous with a subtle follicular appearance", "C. Whitish and opalescent with an obscured capillary network", "D. Yellowish and xanthomatous with a normal pit architecture", "E. Grayish and friable with an irregular surface microrelief"], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/e74ce7d103624e40852a7dab96faf0f8.mp4"}} | |
| {"qid": "Colon-Bench_1352", "question": "What dynamic change occurs in the video starting around the 01:00 mark to help characterize the lesion?", "options": ["A. A switch to NBI/green light mode for better visualization", "B. An application of acetic acid for border identification", "C. A spray of indigo carmine dye for surface assessment", "D. A change to magnification view for pit pattern analysis", "E. A toggle to near-focus mode for mucosal detail enhancement"], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/fc0bb5b0c5964eb48912df3fb6f76fc4.mp4"}} | |
| {"qid": "Colon-Bench_377", "question": "In which anatomical segment is the lesion located, and which specific maneuver is being performed during its visualization?", "options": ["A. The cecum, observed during a suction-assisted maneuver", "B. The sigmoid colon, observed during a hooking maneuver", "C. The transverse colon, observed during a position change maneuver", "D. The descending colon, observed during a water immersion maneuver", "E. The rectum, observed during a retroflexion maneuver"], "answer": "E", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/9fc63cc2552b4b31a75bffa7b4b46974.mp4"}} | |
| {"qid": "Colon-Bench_438", "question": "In the video, where is the lesion positioned when it becomes clearly visible at the 2-second mark?", "options": ["A. On the right side of the screen on the rim of a semilunar fold", "B. In the center of the screen on the luminal edge of a colonic fold", "C. In the upper part of the screen on the base of a haustral fold", "D. At the bottom of the screen on the far margin of a mucosal fold", "E. On the left side of the screen on the crest of a haustral fold"], "answer": "E", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/fb6b77638d1d4d288856b0033c558bb4.mp4"}} | |
| {"qid": "Colon-Bench_315", "question": "At the 2.0-second mark of the video, what specific finding is identified on the crest of a colonic fold?", "options": ["A. A large, excavated ulcer", "B. A tiny, pedunculated polyp", "C. A diminutive, flat lesion", "D. A medium, depressed plaque", "E. A small, sessile polyp"], "answer": "E", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/a1b1f87ae4cc42e895e7a69016647f29.mp4"}} | |
| {"qid": "Colon-Bench_136", "question": "How are the surface texture and color of the abnormality appearing at 26.0s described in comparison to the surrounding healthy mucosa?", "options": ["A. A distinct reddish discoloration and a slightly granular surface.", "B. A pale whitish discoloration and a prominently irregular surface.", "C. A faint brownish discoloration and a consistently nodular surface.", "D. A subtle yellowish discoloration and a completely smooth surface.", "E. A mild opalescent discoloration and a significantly pitted surface."], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/40910c1ecac24fb5b7903bd773df990d.mp4"}} | |
| {"qid": "Colon-Bench_639", "question": "At 00:04s, what are the visual characteristics of the finding located on the crest of the haustral fold on the right side of the screen?", "options": ["A. A red, mildly flattened, and circular diminutive polyp.", "B. A white, smoothly rounded, and spherical submucosal mass.", "C. A gray, subtly depressed, and elliptical mucosal lesion.", "D. A pink, highly protuberant, and lobulated pedunculated polyp.", "E. A pale, slightly elevated, and elongated sessile polyp."], "answer": "E", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/d8883dd0b04348569ed2d6f2e38ce345.mp4"}} | |
| {"qid": "Colon-Bench_248", "question": "What procedural action is performed during the video to better highlight the contours and morphology of the lesion?", "options": ["A. A suction port is used to drain the area", "B. An air pump is used to distend the area", "C. A dye spray is used to outline the area", "D. A water jet is used to cleanse the area", "E. A distal cap is used to flatten the area"], "answer": "D", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/7e9ef175027c4ffd959feec730205227.mp4"}} | |
| {"qid": "Colon-Bench_375", "question": "Which specific clinical feature mentioned in the description is used to characterize the identified sessile serrated lesion (SSL)?", "options": ["A. The presence of an expanded crypt pattern consisting of dark basal spots", "B. The presence of an obscured vascularity consisting of pale mucosal areas", "C. The presence of a cloudy surface consisting of fuzzy mucosal edges", "D. The presence of a reddish rim consisting of peripheral vascular erythema", "E. The presence of a mucus cap consisting of adherent yellowish debris"], "answer": "E", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/fc0bb5b0c5964eb48912df3fb6f76fc4.mp4"}} | |
| {"qid": "Colon-Bench_376", "question": "At the 6.0s mark, what finding becomes clearly visible on the left side of the screen?", "options": ["A. A pale, sessile polyp draped over a mucosal fold.", "B. A firm, subepithelial lesion arising from a luminal bend.", "C. A reddish, pedunculated polyp attached to the bowel wall.", "D. A small, ulcerated mass protruding from a haustral fold.", "E. A yellowish, flat lesion centered on a colonic fold."], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/3cd7e465ae17459081df793d92d833de.mp4"}} | |
| {"qid": "Colon-Bench_1471", "question": "At the 00:02s mark, which of the following is first clearly visible in the field of view?", "options": ["A. A small, depressed lesion", "B. A large, pedunculated polyp", "C. A diminutive, flat lesion", "D. A tiny, elevated polyp", "E. A small, sessile polyp"], "answer": "E", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/9b02e181cfd84947912b32d9c98aa19a.mp4"}} | |
| {"qid": "Colon-Bench_384", "question": "What change in the imaging mode occurs at approximately the 10-second mark of the video?", "options": ["A. Flexible Spectral Imaging (FICE) is applied to highlight the vessel pattern", "B. Narrow Band Imaging (NBI) is activated to visualize the vasculature", "C. Blue Laser Imaging (BLI) is engaged to enhance the surface pattern.", "D. Linked Color Imaging (LCI) is selected to improve the mucosal contrast", "E. Dual Focus (DF) is utilized to assess the microvascular architecture"], "answer": "C", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/340aaf9665c64c11a38209af91908076.mp4"}} | |
| {"qid": "Colon-Bench_227", "question": "Regarding the abnormality that becomes visible at the 1.0-second mark, which of the following best describes its morphology and surface characteristics?", "options": ["A. A small, stalked adenomatous mass with a friable, ulcerated surface.", "B. A tiny, circular mucosal nodule with a coarse, uneven surface.", "C. A large, sessile polypoid lesion with a smooth, bulbous surface.", "D. A diminutive, rounded subepithelial growth with a uniform, tense surface.", "E. A medium, flat elevated plaque with a granular, pitted surface."], "answer": "C", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/f0fdf5218db24eaa9342c906cf6288fe.mp4"}} | |
| {"qid": "Colon-Bench_295", "question": "Which of the following best describes the surface texture and appearance of the abnormality as it becomes clearly visible at 21.0 seconds?", "options": ["A. A non-granular surface (LST-NG type) with focal friability", "B. A depressed mucosal area (Paris IIc type) with irregular borders", "C. A villous surface pattern (Kudo IV type) with surface exudate", "D. A granular surface pattern (LST-G type) with slight erythema", "E. A smooth mucosal elevation (Paris Is type) with central pallor"], "answer": "D", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/f50c3784b569480097107445b8c9e68f.mp4"}} | |
| {"qid": "Colon-Bench_425", "question": "Which specific surface feature is identified on the lesion that indicates a high risk of bleeding?", "options": ["A. A large adherent clot (sentinel clot)", "B. A small vascular tuft (angiectasia)", "C. A focal red spot (cherry-red spot)", "D. A raised visible vessel (pigmented protuberance)", "E. A white fibrin plug (nipple sign)"], "answer": "C", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/6d269931d0fb4e9bb15711840434c8bb.mp4"}} | |
| {"qid": "Colon-Bench_1037", "question": "At what timestamp does the sessile polyp first become clearly visible on the haustral fold?", "options": ["A. 3.0 seconds", "B. 18.0 seconds", "C. 7.0 seconds", "D. 5.0 seconds", "E. 12.0 seconds"], "answer": "D", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/a0df087fa7f14579a3b5ef9783f65f52.mp4"}} | |
| {"qid": "Colon-Bench_1093", "question": "Which of the following sets of characteristics accurately describes the lesion's appearance and its specific location within the colon?", "options": ["A. Brownish to highly pigmented color and a lobulated surface located behind a haustral fold", "B. Whitish to slightly opaque color and a villous surface located along the base of a fold", "C. Hyperemic to deep reddish color and a granular surface located on the proximal side of a fold", "D. Isochromatic to slightly pale color and a smooth surface located on the crest of a fold", "E. Yellowish to creamy white color and a nodular surface located between two mucosal folds"], "answer": "D", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/27622dab3c684c16b2f0c12a6e70bea8.mp4"}} | |
| {"qid": "Colon-Bench_184", "question": "Which of the following best describes the surface appearance and vascularity of the lesion's head?", "options": ["A. Pale and smooth with faint microvasculature", "B. Whitish and villous with irregular capillary loops", "C. Reddish and lobulated with prominent vasculature", "D. Yellowish and pitted with absent surface vessels", "E. Hyperemic and granular with tortuous surface vessels"], "answer": "C", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/9b8c80ab21954e868648cc72d5d19f07.mp4"}} | |
| {"qid": "Colon-Bench_170", "question": "Regarding the small lesion first visible on the haustral fold, what procedure is performed later in the video clip?", "options": ["A. Snare polypectomy", "B. Cold snare resection", "C. Bipolar cautery", "D. Hot biopsy ablation", "E. Forceps biopsy"], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/8ce27205040d4fa8ba2e05efee9b0203.mp4"}} | |
| {"qid": "Colon-Bench_331", "question": "What clinical action is performed on the second, slightly larger sessile polyp located on the haustral fold at the 45.0-second mark?", "options": ["A. It is sampled with cold biopsy forceps.", "B. It is washed with a water jet.", "C. It is resected using a polypectomy snare.", "D. It is treated with argon plasma coagulation.", "E. It is injected with a submucosal lifting agent."], "answer": "B", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/9d9ed9d087ba4d2098da18ab9d700c42.mp4"}} | |
| {"qid": "Colon-Bench_146", "question": "What are the specific clinical features and size of the lesion that appears at 106.0 seconds on the semilunar fold?", "options": ["A. Approximately 3-5 mm in diameter with a smooth surface", "B. Approximately 6-8 mm in diameter with a lobulated surface", "C. Approximately 7-10 mm in diameter with a granular surface", "D. Approximately 5-7 mm in diameter with an irregular surface", "E. Approximately 2-4 mm in diameter with a nodular surface"], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/60f5a839c14943a5ad764d6f7fdb0641.mp4"}} | |
| {"qid": "Colon-Bench_530", "question": "Which of the following best describes the appearance and size of the lesion situated on the haustral fold?", "options": ["A. Granular, red surface, measuring approximately 3-4mm", "B. Lobulated, pale surface, measuring approximately 8-10mm", "C. Nodular, tan surface, measuring approximately 10-12mm", "D. Smooth, pink surface, measuring approximately 5-6mm", "E. Irregular, white surface, measuring approximately 7-9mm"], "answer": "D", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/2e4b5c0bb4d14fe98bc650e62bd19c0f.mp4"}} | |
| {"qid": "Colon-Bench_160", "question": "When the abnormality appears at 30.5s, how is its visual relationship to the surrounding colon tissue characterized?", "options": ["A. It appears distinct from the surrounding tissue", "B. It is obscured by light reflections and suction marks", "C. It is partially hidden behind a prominent colon wall fold", "D. It is indistinguishable from the surrounding mucosal folds", "E. It blends seamlessly into the surrounding healthy mucosa"], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/6e955d3e135d428297cec09e1ba33b18.mp4"}} | |
| {"qid": "Colon-Bench_1166", "question": "What clinical finding becomes visible starting at approximately 35.0 seconds in the video?", "options": ["A. A second diminutive polyp on a distal fold.", "B. Active suctioning of residual liquid stool.", "C. Multiple diverticula.", "D. Fresh blood emanating from the proximal colon.", "E. A switch from white light to electronic chromoendoscopy."], "answer": "C", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/1a848e5bfec74352b84a963df5a2576d.mp4"}} | |
| {"qid": "Colon-Bench_1465", "question": "Which of the following describes the morphology and classification of the lesion seen on the haustral fold?", "options": ["A. Paris classification IIc (slightly depressed lesion)", "B. Paris classification IIb (completely flat lesion)", "C. Paris classification Ip (pedunculated polyp)", "D. Paris classification IIa (flat elevated lesion)", "E. Paris classification Is (sessile polyp)"], "answer": "E", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/0d742884b9ba4b0abc8efaad5de7ccc5.mp4"}} | |
| {"qid": "Colon-Bench_7", "question": "Based on the visual presentation in the lower rectum, the identified finding most closely resembles which of the following?", "options": ["A. A healed scar (ulcer scar)", "B. A shallow pit (mucosal depression)", "C. A venous bulge (internal hemorrhoid)", "D. A prominent fold (anatomic landmark)", "E. A sessile polyp (adenomatous polyp)"], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/718bc873c92e4b2c8bcddcfc9434c06c.mp4"}} | |
| {"qid": "Colon-Bench_1004", "question": "At the 0.0s mark, what primary clinical finding is visible on the right lower aspect of the colon wall?", "options": ["A. A whitish mucosal plaque with a villous appearance.", "B. An erythematous mucosal lesion with a central depression.", "C. A yellowish submucosal bulge with a regular contour.", "D. An opalescent epithelial lesion with a uniform surface.", "E. A blanched mucosal thickening with a stellate pattern."], "answer": "B", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/291c8dfac99e482d8a062928c147e47b.mp4"}} | |
| {"qid": "Colon-Bench_622", "question": "What is identified on the crest of a colonic fold from the beginning of this video clip?", "options": ["A. A subepithelial mass", "B. A sessile polyp", "C. A flat lesion", "D. A mucosal nodule", "E. A pedunculated polyp"], "answer": "B", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/1ccc8946c01f40a79ba9de3e077c178f.mp4"}} | |
| {"qid": "Colon-Bench_957", "question": "At approximately 3.0 seconds into the video clip, what primary abnormality becomes clearly visible within the colonic lumen?", "options": ["A. A flat, pale, superficial serrated adenoma.", "B. A small, red, spherical inflammatory polyp.", "C. A medium, yellow, rounded lipomatous tumor.", "D. A focal, blue, circular submucosal marking.", "E. A large, white, cylindrical parasitic worm."], "answer": "E", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/5c6c6ee868b64b809d48f4873351e08c.mp4"}} | |
| {"qid": "Colon-Bench_426", "question": "Which of the following describes the visual finding observed when the imaging mode switches to narrow-band imaging (NBI) later in the clip?", "options": ["A. It displays a dense capillary network", "B. It displays a regular vascular pattern", "C. It displays an irregular vessel structure", "D. It displays a regular pit pattern", "E. It displays a faint mucosal pattern"], "answer": "B", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/b3b569a8de014dcb948d112a29e87b4f.mp4"}} | |
| {"qid": "Colon-Bench_465", "question": "What specific abnormality is identified as appearing at the 2.0-second mark on the crest of a haustral fold?", "options": ["A. A pedunculated polyp", "B. A flat adenoma", "C. A serrated lesion", "D. A diminutive polyp", "E. A sessile polyp"], "answer": "E", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/0d0e7bb7ef5945ec9b5fbe5f2d30fa21.mp4"}} | |
| {"qid": "Colon-Bench_1041", "question": "Regarding the circumscribed lesion seen at the beginning of the video, what are its approximate size and specific quadrant location?", "options": ["A. Approximately 5-8mm, located in the lower left quadrant (7 o'clock position)", "B. Approximately 3-5mm, located in the upper left quadrant (11 o'clock position)", "C. Approximately 2-4mm, located in the lower right quadrant (5 o'clock position)", "D. Approximately 10-15mm, located in the upper right quadrant (2 o'clock position)", "E. Approximately 8-10mm, located in the lower left quadrant (8 o'clock position)"], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/dfa57ab68a134d1cbdda868cfc7bc95f.mp4"}} | |
| {"qid": "Colon-Bench_31", "question": "What is the approximate size and specific anatomical placement of the lesion as observed in the clip?", "options": ["A. Approximately 2–4 mm in diameter, located on a flat section of the colonic wall", "B. Approximately 15–20 mm in diameter, located behind a prominent haustral fold", "C. Approximately 7–10 mm in diameter, located on the crest of a semilunar fold", "D. Approximately 5–8 mm in diameter, located on the crest of a haustral fold", "E. Approximately 10–12 mm in diameter, located at the base of a haustral fold"], "answer": "D", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/2bccfc072a0a48da8ae3ba0026d94c70.mp4"}} | |
| {"qid": "Colon-Bench_200", "question": "Regarding the lesion that appears at 13.0s, what is its location and color relative to the surrounding mucosa?", "options": ["A. On the crest of a haustral fold and isochromatic or slightly pale", "B. At the base of a semilunar fold and whitish or distinctly opaque", "C. Behind a proximal semilunar fold and congested or deeply reddened", "D. In the valley of a haustral fold and erythematous or slightly hyperemic", "E. On a flat section of the mucosal wall and yellowish or slightly translucent"], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/34e728919d3b45e28086267d6d874009.mp4"}} | |
| {"qid": "Colon-Bench_194", "question": "After the polyp is identified, what action does the endoscopist take to better evaluate its adenomatous-appearing surface pattern?", "options": ["A. Utilizing the blue-light mode of the endoscope", "B. Activating the narrow-band mode of the endoscope", "C. Applying the linked-color mode of the endoscope", "D. Increasing the optical zoom of the endoscope", "E. Engaging the near-focus mode of the endoscope"], "answer": "E", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/1823cbfbfae74155a77e79a9bf1b6599.mp4"}} | |
| {"qid": "Colon-Bench_1099", "question": "At the 12.0s mark of the video, what clinical finding is first clearly visible?", "options": ["A. A pedunculated polyp", "B. A sessile polyp", "C. A mucosal suction mark", "D. No abnormality detected", "E. A flat (Paris IIb) lesion"], "answer": "B", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/28d64bb28a0c410b980d2ca92e6b6b3a.mp4"}} | |
| {"qid": "Colon-Bench_298", "question": "What type of abnormality is identified near the anal verge in this video clip?", "options": ["A. A large, purple, bulging hemorrhoid", "B. A small, raised, pedunculated polyp", "C. A medium, smooth, submucosal nodule", "D. A large, flat, sessile lesion", "E. A large, irregular, ulcerated mass"], "answer": "D", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/0fe49215e5e044da8ed4893bd90c0dc1.mp4"}} | |
| {"qid": "Colon-Bench_151", "question": "At approximately what timestamp does a second, similar sessile polyp become visible on the left wall of the colon?", "options": ["A. 12.0 seconds", "B. 18.0 seconds", "C. 5.0 seconds", "D. 8.0 seconds", "E. 25.0 seconds"], "answer": "D", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/ab6d42cf48f54bbca63baad130f5196f.mp4"}} | |
| {"qid": "Colon-Bench_924", "question": "Which of the following best describes the clinical appearance and surface characteristics of the lesion seen in the video?", "options": ["A. Large-sized (20-25mm) and yellowish with a flat, velvety texture and blurred margins", "B. Medium-sized (15-20mm) and pinkish with a smooth, regular texture and thick mucus film", "C. Medium-sized (10-15mm) and reddish with a granular, lobulated texture and yellow debris", "D. Small-sized (5-8mm) and hyperemic with a pitted, depressed texture and focal bleeding", "E. Small-sized (3-5mm) and whitish with a firm, nodular texture and adherent white mucus"], "answer": "C", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/2dca4789729c4330a247f7c5dec396aa.mp4"}} | |
| {"qid": "Colon-Bench_770", "question": "Which imaging modality and magnification setting are used to examine the lesion when it first appears?", "options": ["A. White light imaging (WLI) with standard magnification", "B. Narrow-band imaging (NBI) with near focus magnification", "C. Linked color imaging (LCI) with optical zoom magnification", "D. Narrow-band imaging (NBI) with standard magnification", "E. Blue laser imaging (BLI) with high power magnification"], "answer": "B", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/6f90dcdc7a8a4f1e9ff1885120397a5b.mp4"}} | |
| {"qid": "Colon-Bench_526", "question": "At what timestamp does the pedunculated polyp become clearly visible on the right side of the screen during colonoscope withdrawal?", "options": ["A. 46.0s", "B. 59.0s", "C. 35.5s", "D. 12.5s", "E. 28.0s"], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/fba64caf50b3466f8f4d68e6a9a9df9c.mp4"}} | |
| {"qid": "Colon-Bench_203", "question": "How does the appearance of the lesion change after it is suctioned into the cap and band ligation is performed?", "options": ["A. It becomes dusky and globular due to tissue ischemia", "B. It becomes purple and polypoid due to strangulation", "C. It becomes blue and engorged due to blood entrapment", "D. It becomes maroon and spherical due to venous obstruction", "E. It becomes red and edematous due to vascular congestion"], "answer": "B", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/e1d1cc5beb0041eca50c0bde9d0775d8.mp4"}} | |
| {"qid": "Colon-Bench_69", "question": "Which set of physical characteristics best describes the lesion seen draped over the haustral fold?", "options": ["A. Sessile/bulky morphology, yellowish color, and distinct borders.", "B. Flat/sessile morphology, pale color, and indistinct borders.", "C. Lobulated morphology, hyperemic color, and well-defined borders.", "D. Granular morphology, normal mucosal color, and regular borders.", "E. Nodular/raised morphology, erythematous color, and clear borders."], "answer": "B", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/601ab7b146df4f36a566788f319244e4.mp4"}} | |
| {"qid": "Colon-Bench_318", "question": "Which of the following best describes the abnormality that becomes visible at the 10.0s mark and its estimated size?", "options": ["A. A flat lesion measuring 2-4mm", "B. A pedunculated polyp measuring 8-10mm", "C. A semi-pedunculated polyp measuring 7-9mm", "D. A depressed lesion measuring 3-5mm", "E. A sessile polyp measuring 4-6mm"], "answer": "E", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/a6df5f46a62c4a0d91665030c212d2d6.mp4"}} | |
| {"qid": "Colon-Bench_1007", "question": "Based on the visual evidence in the video, what type of abnormality is identified and what is its morphology?", "options": ["A. A diminutive depressed lesion", "B. A tiny flat adenoma", "C. A medium elevated mass", "D. A large pedunculated polyp", "E. A small sessile polyp"], "answer": "E", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/27622dab3c684c16b2f0c12a6e70bea8.mp4"}} | |
| {"qid": "Colon-Bench_32", "question": "What are the morphological and surface characteristics of the lesion visible from the 0.0s mark?", "options": ["A. Pale and completely flat with a granular surface", "B. Hyperemic and slightly depressed with a villous surface", "C. Yellowish and broadly sessile with a pitted surface", "D. Erythematous and slightly elevated with a nodular surface", "E. Whitish and clearly pedunculated with a smooth surface"], "answer": "D", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/2135a2e1177e42028e0cce98fa4bb5f4.mp4"}} | |
| {"qid": "Colon-Bench_954", "question": "Which of the following describes the color and morphology of the lesion at the beginning of the clip?", "options": ["A. A sessile, pale-colored polyp", "B. A firm, yellowish-colored nodule", "C. A prominent, blue-colored mound", "D. A pedunculated, pink-colored mass", "E. A flat, reddish-colored lesion"], "answer": "C", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/05015f1e2d25450dabd394b01ffe55f9.mp4"}} | |
| {"qid": "Colon-Bench_237", "question": "In terms of color and border definition, how does the lesion compare to the surrounding mucosa in the video?", "options": ["A. It is pale and yellowish with indistinct borders.", "B. It is red and hyperemic with well-defined borders.", "C. It is pink and erythematous with irregular borders.", "D. It is white and opaque with circumscribed borders.", "E. It is beige and translucent with sharp borders."], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/da011109cc144e63a965e87203b499f9.mp4"}} | |
| {"qid": "Colon-Bench_252", "question": "Based on the visual presentation, what are the approximate size and surface characteristics of the abnormality?", "options": ["A. 8-10mm in diameter with a lobulated, reddish surface", "B. 4-6mm in diameter with a smooth, pinkish surface", "C. 2-3mm in diameter with a flat, whitish surface", "D. 1-2mm in diameter with a raised, pale surface", "E. 5-7mm in diameter with a granular, yellowish surface"], "answer": "B", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/439357cb637b47a7910e3885c666c564.mp4"}} | |
| {"qid": "Colon-Bench_185", "question": "At approximately 48 seconds into the video, how is the color of the lesion described compared to its initial slightly erythematous appearance?", "options": ["A. It exhibits a brownish tint", "B. It exhibits a whitish shade", "C. It exhibits a greenish tone", "D. It exhibits a yellowish hue", "E. It exhibits a bluish coloration"], "answer": "D", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/8a724f5957164d63934cb19d2243e9a8.mp4"}} | |
| {"qid": "Colon-Bench_191", "question": "At approximately the 0:43 mark, when the viewing mode is switched to white light, how is the lesion visually characterized before the next procedural step?", "options": ["A. As a sessile, faintly yellowish lesion scheduled for endoscopic removal.", "B. As a friable, intensely congested mass selected for argon plasma coagulation.", "C. As a granular, mildly hyperemic polyp prepared for cold snare resection.", "D. As a smooth, slightly erythematous nodule targeted for submucosal injection.", "E. As a flat, distinctly pale elevation identified for biopsy sampling."], "answer": "D", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/c17b7b8d241f4700b6ad2d036dda240b.mp4"}} | |
| {"qid": "Colon-Bench_1410", "question": "What type of abnormality is identified on the haustral fold at the beginning of the video?", "options": ["A. A pale flat-elevated polyp measuring approximately 7-9 mm", "B. A typical semi-pedunculated polyp measuring approximately 6-8 mm", "C. A subtle non-polypoid lesion measuring approximately 4-6 mm", "D. A diminutive sessile polyp measuring approximately 2-3 mm", "E. A small pedunculated polyp measuring approximately 5-7 mm"], "answer": "D", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/f0a903638dcb42f9b71d3f46deec4f9a.mp4"}} | |
| {"qid": "Colon-Bench_764", "question": "At the 0.0s mark of the video, what clinical finding is immediately visible on the haustral fold?", "options": ["A. A depressed lesion", "B. A flat lesion", "C. A diminutive polyp", "D. A pedunculated polyp", "E. A sessile polyp"], "answer": "E", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/f5992878e096413db650f3e46edf299a.mp4"}} | |
| {"qid": "Colon-Bench_899", "question": "At the 5.0-second mark, what clinical finding becomes clearly visible in the lower left quadrant of the view?", "options": ["A. A sessile, reddened, friable polyp behind a transverse haustral fold.", "B. A flat, pale, scar-like lesion on the crest of a haustral fold.", "C. A raised, opaque, mucus-covered growth near the base of a haustral fold.", "D. A pedunculated, yellowish, lobulated mass along the edge of a colonic fold.", "E. A diminutive, hyperemic, granular nodule within a deep mucosal fold."], "answer": "B", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/389a4745055d456c94dc793469de529d.mp4"}} | |
| {"qid": "Colon-Bench_444", "question": "When the lesion is observed under narrow-band imaging (NBI), what is its color and relationship to the surrounding mucosa?", "options": ["A. It appears dark brown with an irregular vessel pattern", "B. It appears pale with an obscured mucosal detail", "C. It appears brownish with a dense capillary network", "D. It appears purple with a distinct surface pattern", "E. It appears greenish with a faint vascular structure"], "answer": "D", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/1823cbfbfae74155a77e79a9bf1b6599.mp4"}} | |
| {"qid": "Colon-Bench_1315", "question": "At the very start of the video (0.0s), what abnormality is immediately visible on the crest of a haustral fold?", "options": ["A. A pedunculated polyp", "B. A mucosal nodule", "C. A flat lesion", "D. A depressed lesion", "E. A sessile polyp"], "answer": "E", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/b3b569a8de014dcb948d112a29e87b4f.mp4"}} | |
| {"qid": "Colon-Bench_1112", "question": "What is the lesion's location and its relationship to the surrounding mucosa at the 5.0-second mark?", "options": ["A. It is located on a mucosal fold and surrounded by a pale, whitish halo", "B. It is located on a rectal valve and encircled by a thin, vascular ring", "C. It is located on the cecal pole and surrounded by a smooth, greyish margin", "D. It is located on a haustral fold and bordered by a faint, reddish rim", "E. It is located on the rectal wall and bordered by a blurry, opaque edge"], "answer": "A", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/d650ca61562e4a05a64347eb59af81c4.mp4"}} | |
| {"qid": "Colon-Bench_389", "question": "At the start of the video clip (0.0s), what type of finding is immediately visible on a haustral fold?", "options": ["A. Submucosal mass", "B. Mucosal ulcer", "C. Flat lesion", "D. Sessile polyp", "E. Pedunculated polyp"], "answer": "D", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/11adce95e4ee407aad5d307dd29e7832.mp4"}} | |
| {"qid": "Colon-Bench_624", "question": "Based on the visual evidence in the clip, what type of finding is observed?", "options": ["A. A pedunculated polyp (Paris Ip)", "B. No abnormality detected", "C. A solitary linear mucosal tear", "D. A suction-induced hematoma", "E. A small aphthous ulcer"], "answer": "E", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/13ff5ae4422a4a74b44ce38a1271938b.mp4"}} | |
| {"qid": "Colon-Bench_1345", "question": "What type of abnormality is first clearly visible on the colon wall at the 30.5-second mark?", "options": ["A. A pedunculated, friable polyp", "B. A depressed, ulcerated lesion", "C. A sessile, erythematous polyp", "D. A protruding, granular mass", "E. A flat, hyperemic nodule"], "answer": "C", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/6e955d3e135d428297cec09e1ba33b18.mp4"}} | |
| {"qid": "Colon-Bench_471", "question": "Which of the following describes the surface texture and color of the lesion visible from the start of the video?", "options": ["A. Whitish with a moderately pitted surface texture", "B. Pale with a completely smooth surface texture", "C. Yellowish with a prominently nodular surface texture", "D. Erythematous with a slightly granular surface texture", "E. Tan-colored with a distinctly villous surface texture"], "answer": "D", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/e0f8578a6a874704b966b980e5122740.mp4"}} | |
| {"qid": "Colon-Bench_1030", "question": "Based on the visual features from the start of the video, which statement best describes the primary lesion?", "options": ["A. A large pedunculated polyp with a lobulated surface and vascularity prominent across the head", "B. A small sessile polyp with a smooth surface and coloration similar to the surrounding mucosa", "C. A medium semi-pedunculated growth with a villous surface and erythema distinct across the mucosa", "D. A diminutive flat lesion with a granular surface and coloration pale relative to the mucosa", "E. A tiny depressed lesion with a fissured surface and hyperemia localized to the surrounding tissue"], "answer": "B", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/81188ef2aaf24d5a8aa1d02030313b10.mp4"}} | |
| {"qid": "Colon-Bench_107", "question": "Regarding the lesion first identified at 11.5s, which of the following best describes its visual characteristics and surface texture as stated in the clip?", "options": ["A. Dark-reddish in color with a friable, intensely ulcerated surface.", "B. Reddish-brown in color with a villous, highly convoluted surface.", "C. Pinkish-white in color with a smooth, completely flat surface.", "D. Yellowish-orange in color with a granular, slightly nodular surface.", "E. Whitish-gray in color with a pitted, distinctly reticulated surface."], "answer": "D", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/3eade1e12148476587eba6791ff98dbd.mp4"}} | |
| {"qid": "Colon-Bench_406", "question": "Which of the following best describes the surface appearance and color of the lesion visible from the beginning of the clip?", "options": ["A. Granular and pale surface, different from the neighboring mucosa", "B. Pitted and yellowish surface, distinct from the normal colonic wall", "C. Villous and whitish surface, distinguishable from the nearby mucosa", "D. Lobulated and reddish surface, darker than the adjacent bowel wall", "E. Smooth and pinkish surface, consistent with the surrounding mucosa"], "answer": "E", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/104235a09b24491098ecd1286fb6c8ea.mp4"}} | |
| {"qid": "Colon-Bench_448", "question": "Which visual features characterize the surface and borders of the lesion in relation to the surrounding mucosa?", "options": ["A. A velvety or intensely hyperemic appearance with distinct regular borders that demonstrate a dense subepithelial capillary net", "B. A pale or yellowish-white cloudy appearance with indistinct borders that disrupt the normal vascular pattern", "C. A dusky brownish or hyperpigmented appearance with raised irregular borders that show a distorted capillary loop system", "D. A smooth pinkish or glistening appearance with smoothly tapering borders that merge with the adjacent normal vascular tree", "E. A silvery or pearly opalescent appearance with sharply circumscribed borders that highlight the surrounding capillary distribution"], "answer": "B", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/dc1fa6785c0d4ce088fc78567dc7cf38.mp4"}} | |
| {"qid": "Colon-Bench_1211", "question": "In the video, what is the appearance of the lesion while Narrow Band Imaging (NBI) is active?", "options": ["A. Light greenish", "B. Pale", "C. Reddish-brown", "D. Grayish-white", "E. Dark brownish"], "answer": "B", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/581c268ff777445784f6f6fa517f6744.mp4"}} | |
| {"qid": "Colon-Bench_744", "question": "Which of the following best describes the shape and color of the focal lesion observed at the 00:00 timestamp?", "options": ["A. Oval or nodular shape with a grayish, necrotic base", "B. Rounded or sessile shape with a yellowish, exudative base", "C. Flat or depressed shape with a pale, indurated base", "D. Circular or annular shape with a whitish, purulent base", "E. Irregular or linear shape with a reddish, hemorrhagic base"], "answer": "E", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/03e3db6c5e27420ba8854a2aed0362dc.mp4"}} | |
| {"qid": "Colon-Bench_1262", "question": "At the 1.0s mark, what finding is first clearly visible on the right lateral wall of the colon?", "options": ["A. A large pedunculated polyp with a prominent stalk", "B. A cluster of suction marks and bubbles", "C. No abnormality detected", "D. A flat, non-elevated mucosal lesion (Paris IIb)", "E. A small, sessile polyp"], "answer": "E", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/cdabd004f2714a06b64567c31bd84df7.mp4"}} | |
| {"qid": "Colon-Bench_1209", "question": "Which of the following best describes the size, shape, and coloration of the lesion first observed at the 13.0s timestamp?", "options": ["A. Approximately 10mm, pedunculated, and similar in color to the nearby tissue", "B. Approximately 4mm, oval-shaped, and similar in color to the surrounding wall", "C. Approximately 2mm, flat-shaped, and slightly redder than the surrounding mucosa", "D. Approximately 7mm, sessile-shaped, and notably paler than the adjacent mucosa", "E. Approximately 5mm, dome-shaped, and similar in color to the surrounding mucosa"], "answer": "E", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/9f3cf68da88044e5927639e7bc2ea8a7.mp4"}} | |
| {"qid": "Colon-Bench_395", "question": "What type of abnormality is first identified at the 8.0-second mark, and what is its stated approximate size?", "options": ["A. A medium flat lesion, approximately 8-10mm in size.", "B. A small sessile polyp, approximately 4-6mm in size.", "C. A small subepithelial nodule, approximately 3-5mm in size.", "D. A tiny pedunculated polyp, approximately 2-3mm in size.", "E. A large semi-pedunculated polyp, approximately 10-12mm in size."], "answer": "B", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/35157542fe1545e6bfbe22154d10281b.mp4"}} | |
| {"qid": "Colon-Bench_1383", "question": "Which of the following best describes the physical characteristics of the lesion that appears at the 4.0-second mark?", "options": ["A. Large size (10-15mm) with a lobulated, villous appearance and color similar to or darker than the mucosa.", "B. Small size (6-9mm) with a slightly elevated, sessile appearance and color similar to or redder than the mucosa.", "C. Diminutive size (3-5mm) with a smooth, dome-shaped appearance and color similar to or paler than the mucosa.", "D. Small size (5-8mm) with a pedunculated, stalk-like appearance and color similar to or more hyperemic than the mucosa.", "E. Sub-centimeter size (7-9mm) with a flat, non-polypoid appearance and color similar to or yellower than the mucosa."], "answer": "C", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/689a7fb246454e45a7b34ab1b913e50f.mp4"}} | |
| {"qid": "Colon-Bench_835", "question": "Regarding the lesion that appears at 3.0s, what is its specific location and orientation in the field of view?", "options": ["A. On the outer margin of a haustral fold at the bottom left (7 to 9 o'clock)", "B. On the distal curve of a haustral fold at the top right (1 to 2 o'clock)", "C. On the inner curve of a haustral fold at the center right (3 to 4 o'clock)", "D. On the crest of a haustral fold at the bottom right (5 to 7 o'clock)", "E. On the base of a haustral fold at the top left (10 to 11 o'clock)"], "answer": "D", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/b7a9cd867f2c4b81b6e29a162fe16596.mp4"}} | |
| {"qid": "Colon-Bench_1313", "question": "What type of finding is visible immediately at the start of the video clip on the lower-left wall?", "options": ["A. A pedunculated polyp", "B. A flat adenoma", "C. A sessile polyp", "D. A subepithelial mass", "E. A depressed lesion"], "answer": "C", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/b78e52615e9246ed919fabec427b2817.mp4"}} | |
| {"qid": "Colon-Bench_715", "question": "Which finding is identified on the upper left wall at the start of the video?", "options": ["A. A subepithelial mass", "B. A pedunculated polyp", "C. A sessile polyp", "D. No abnormality detected", "E. A flat lesion (Paris IIb)"], "answer": "C", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/daab8581e4ae472caabfd801c315ff9e.mp4"}} | |
| {"qid": "Colon-Bench_568", "question": "While the polyp is being visualized, what feature in the video frame confirms the specific position of the colonoscope?", "options": ["A. The presence of an appendiceal orifice in the frame, indicating cecal position.", "B. The presence of a black insertion tube in the frame, indicating retroflexion.", "C. The presence of a blue splenic shadow in the frame, indicating splenic flexure.", "D. The presence of a dark hepatic shadow in the frame, indicating hepatic flexure.", "E. The presence of a triangular lumen in the frame, indicating transverse colon."], "answer": "B", "subcategory": "_none", "video_ref": {"repo": "ajhamdi/colon-bench", "zip_path": "", "member": "videos/cc1524f2cfcc4e0ca098160d5c9093a0.mp4"}} | |