Metachronic malignant transformation of small bowel and rectal endometriosis in the same patient

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Abstract

Background: Malignant transformation of intestinal endometriosis is a rare event with an unknown rate of incidence. Metachronous progression of endometriosis to adenocarcinoma from two distant intestinal foci happening in the same patient has not been previously reported. Case presentation: We describe a case of metachronic transformation of ileal and rectal endometriosis into an adenocarcinoma occurring in a 45-year-old female without macroscopic pelvic involvement of her endometriosis. First, a right colectomy was performed due to intestinal obstruction by an ileal mass. Pathological examination revealed an ileal endometrioid adenocarcinoma and contiguous microscopic endometriotic foci. Twenty months later, a rectal mass was discovered. An endoscopic biopsy revealed an adenocarcinoma. En bloc anterior rectum resection, hysterectomy and bilateral salpingectomy were performed. A second endometrioid adenocarcinoma arising from a focus of endometriosis within the wall of the rectum was diagnosed. Conclusion: Intestinal endometriosis should be considered a premalignant condition in premenopausal women. © 2006 Marchena-Gomez et al; licensee BioMed Central Ltd.

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APA

Marchena-Gomez, J., Conde-Martel, A., Hemmersbach-Miller, M., & Alonso-Fernandez, A. (2006). Metachronic malignant transformation of small bowel and rectal endometriosis in the same patient. World Journal of Surgical Oncology, 4. https://doi.org/10.1186/1477-7819-4-93

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