Endometriosis of the Sigmoid Colon Presenting as Colitis or Malignancy with Bowel Obstruction: Two Surgical Case Reports.

Valeriia Skurtol
2025 · doi:10.5281/zenodo.15686651 · W6912226911
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⚙ AI-generated summary by gemini-2.5-flash-lite, 2026-07-14 ⓘ

This report describes two surgical cases where sigmoid colon endometriosis mimicked colitis or malignancy, resulting in bowel obstruction requiring surgical intervention and histopathological confirmation.

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⚙ AI-generated deep summary by claude@2026-07, 2026-07-14 · read from full text ⓘ

This paper reports two surgical case reports of sigmoid colon endometriosis that presented like colitis or a malignancy with primary bowel obstruction. The authors describe how the patients required surgical interventions, with histopathology used to confirm that the obstructing tissue was endometriosis. The paper’s key finding is that intestinal endometriosis, though rare—especially when causing bowel obstruction—can mimic other colorectal diseases and can involve the rectosigmoid/sigmoid region. This paper is centrally about endometriosis — it presents two cases of sigmoid colon endometriosis mimicking colitis or malignancy with bowel obstruction.

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Abstract

Background Endometriosis is a chronic gynecological condition characterized by the presence of endometrial-like tissue outside the uterus, often causing pain, infertility, and gastrointestinal symptoms like constipation. While intestinal involvement is less common, it can, in rare cases, lead to bowel obstruction. The prevalence of intestinal endometriosis ranges from 3% to 37% of all cases, with bowel obstruction due to endometriosis being particularly rare, occurring in 0.1% to 0.7% of cases. The most common sites of intestinal involvement include the ileum 38.3%, rectosigmoid 34.5%, ileocecal junction and appendix 14.9%, and rectum 10.2%. (1) We present two cases whose endometriosis involved the sigmoid colon, mimicking as a colitis or malignancy with primary bowel obstruction, required surgival interventions and histopathology confirmation to the origin of tissue.
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Endometriosis of the Sigmoid Colon Presenting as Colitis or Malignancy with Bowel Obstruction: Two Surgical Case Reports. Authors/Creators Description Background Endometriosis is a chronic gynecological condition characterized by the presence of endometrial-like tissue outside the uterus, often causing pain, infertility, and gastrointestinal symptoms like constipation. While intestinal involvement is less common, it can, in rare cases, lead to bowel obstruction. The prevalence of intestinal endometriosis ranges from 3% to 37% of all cases, with bowel obstruction due to endometriosis being particularly rare, occurring in 0.1% to 0.7% of cases. The most common sites of intestinal involvement include the ileum 38.3%, rectosigmoid 34.5%, ileocecal junction and appendix 14.9%, and rectum 10.2%. (1) We present two cases whose endometriosis involved the sigmoid colon, mimicking as a colitis or malignancy with primary bowel obstruction, required surgival interventions and histopathology confirmation to the origin of tissue. Files MARCR 530.pdf Files (555.7 kB) | Name | Size | Download all | |---|---|---| | md5:6f983002078deb8c14c3e2e2ab09c207 | 555.7 kB | Preview Download |

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