ArticleCureus2025
Active Rectal Bleeding Due to Polyp Avulsion Induced by Bowel Preparation: A Case Report.
Article in Cureus, 2025. 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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2 authors.
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Abstract
Lower gastrointestinal bleeding (LGIB) represents a significant clinical burden. While typically attributed to diverticulosis or angiodysplasia, iatrogenic mechanisms remain poorly characterized. This report describes a case of active rectal bleeding in a 32-year-old male patient following bowel preparation for colonoscopy. Endoscopy revealed massive fresh red blood and clots in the rectum, with an 8-mm mucosal protrusion showing arterial pulsatile bleeding at 8 cm from the anal verge. Characteristic chicken skin mucosa (CSM) surrounded the lesion. Based on the hemorrhagic lesion morphology and CSM features, it was postulated as a mechanical avulsion of a pedunculated (Ip-type) polyp induced by friction from hardened stool or a fiber-induced "snare-like" effect during bowel preparation, exposing vessels and causing massive hemorrhage. This case provides a novel perspective on "bowel preparation-induced polyp avulsion" as a mechanism for LGIB and highlights the potential of CSM as a marker for underlying neoplastic risk.
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