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KMID : 0356720140300050232
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Journal of the Korean Society of Coloproctology
2014 Volume.30 No. 5 p.232 ~ p.236
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Mullerian Adenosarcoma Arising From Rectal Endometriosis
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Yang Chun-Seok
Oh Hoon-Kyu
Kim Dae-Dong
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Abstract
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A Mullerian adenosarcoma is an extremely rare tumor characterized by a stromal component of usually low-grade malignancy and by a benign glandular epithelial component. A Mullerian adenosarcoma occurs mainly in the uterus, but also in extrauterine locations. Extrauterine Mullerian adenosarcomas are thought to arise from endometriotic deposits. A 36-year-old female presented to Daegu Catholic University Medical Center with a symptom of loose stool for several months. The imaging studies revealed a rectal mass, so she underwent a laparoscopic low anterior resection. Although extemporary pathology revealed an inflammatory myofibroblastic tumor, the final histologic diagnosis was a Mullerian adenosarcoma arising from rectal endometriosis. To our knowledge, except a concomitant rectal villotubular adenoma, cases of Mullerian adenosarcomas arising the rectal wall are rare. An adenosarcoma arising from endometriosis should be considered in the differential diagnosis of a pelvic mass, even one appearing in rectal wall, because ectopic endometrial tissue exists everywhere.
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KEYWORD
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Mullerian adenosarcoma, Endometriosis, Rectal neoplasms, Adenosarcoma
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