A Masked Diagnosis: Sigmoid Endometriosis
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This case report describes a 40-year-old woman whose sigmoid lesions, initially concerning for metastatic disease, were histopathologically confirmed as endometriosis.
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Abstract
Serosal involvement in intestinal endometriosis is relatively common, and patients often present with nonspecific gastrointestinal symptoms; however, presentation with deeper mucosal infiltration and rectal bleeding is rare. We report a case of a 40-year-old woman with a history of breast cancer in remission who presented with periodic rectal bleeding and abdominal pain. Computed tomography scan showed sigmoid lesions concerning for metastatic disease. Colonoscopy showed hypervascular sigmoid lesions which were confirmed to be endometriosis on histopathology. This case highlights endometriosis as a rare differential to be considered in young women with abnormal bowel imaging or catamenial rectal bleeding.
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Too few in-corpus citations on either side for a chart; here are the lists.
Cites (3)
- Endometriosis of the bowel. 1987
- Surgery for bladder endometriosis: long-term results and concomitant management of associated posterior deep lesions 2010
- Progression of deep infiltrating rectosigmoid endometriotic nodules 2019
Cited by (1)
References (11)
- Endometriosis of the bowel. via openalex
- Progression of deep infiltrating rectosigmoid endometriotic nodules via openalex
- Surgery for bladder endometriosis: long-term results and concomitant management of associated posterior deep lesions via openalex
- W2291960606 via openalex
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Cited by (1)
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organisms 1
noordeloos 2009062
chemicals 6
tamoxifen
progestin
goserelin
acetate
goserelin
danazol
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- europepmc
- last seen: 2026-06-11T06:19:48.454388+00:00
- openalex
- last seen: 2026-06-10T17:14:06.276822+00:00
- pubmed
- last seen: 2026-05-13T22:24:31.988741+00:00
- scilite
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