ArticleSurgical case reports2026
Cap Polyposis Presenting with Large Bowel Obstruction Mimicking Advanced Colorectal Cancer: A Case Report.
Article in Surgical case reports, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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9 authors.
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Abstract
introductionCap polyposis is a rare, benign inflammatory colorectal disease that usually presents with diarrhea, mucous stool, or abdominal discomfort. Presentation with large bowel obstruction requiring surgical intervention is extremely uncommon. CASE PRESENTATION: A 42-year-old Japanese man presented with anal pain. Colonoscopy revealed a circumferential stenotic lesion in the sigmoid colon that prevented passage of the endoscope, and advanced colorectal cancer causing bowel obstruction was strongly suspected. A transanal ileus tube was inserted for decompression, followed by elective laparoscopic low anterior resection with a temporary diverting ileostomy. Histopathological examination unexpectedly demonstrated cap polyposis, characterized by elongated and distorted crypts, mucosal erosion, and fibrinopurulent exudates forming cap-like structures. The patient was also positive for
conclusionsCap polyposis presenting with bowel obstruction is extremely rare and may mimic advanced colorectal cancer. Surgical intervention can be clinically justified in cases where malignancy cannot be excluded preoperatively.
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