Background: Sigmoidorectal endometriosis accounts for 70% of the cases of intestinal endometriosis. Symptoms are non-specific, frequently resembling adenocarcinomas.
Case: A 45-year-old woman complaining of recurrent rectal bleeding underwent colonoscopy in which a rectal polypoid mass was found. She underwent anterior rectosigmoidectomy and the histological examination of the resected bowel revealed rectal endometriosis with lymph node involvement.
Conclusion: Lymphatic infiltration of epicolic lymph nodes raises questions about the benign nature of this presumed innocent disease.
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