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Malignant Transformation of Endometriosis in the Ischioanal Fossa.


ABSTRACT: We present the case of a 28-year-old nulliparous female with malignant transformation of an ectopic focus of endometriosis in the right ischioanal fossa. A 28-year-old nulliparous patient with a past medical history of polycystic ovarian syndrome (PCOS) was diagnosed with endometrioid adenocarcinoma in her right ischioanal fossa. Initially, patient presented to an emergency department and underwent a CT scan of the appendix to rule out appendicitis. A multiloculated cystic lesion adjacent to the right obturator internus muscle was found. She underwent surgical resection of the mass, which confirmed FIGO grade 2 endometrioid adenocarcinoma, followed by localized radiation therapy. Malignancy arising in endometriosis is rare, and the influence of PCOS on the rate of malignant transformation is not well established.

SUBMITTER: Klebanoff JS 

PROVIDER: S-EPMC5937550 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature

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Malignant Transformation of Endometriosis in the Ischioanal Fossa.

Klebanoff Jordan S JS   Shah Shivani K SK   Cadungog Mark G MG  

Case reports in obstetrics and gynecology 20180423


We present the case of a 28-year-old nulliparous female with malignant transformation of an ectopic focus of endometriosis in the right ischioanal fossa. A 28-year-old nulliparous patient with a past medical history of polycystic ovarian syndrome (PCOS) was diagnosed with endometrioid adenocarcinoma in her right ischioanal fossa. Initially, patient presented to an emergency department and underwent a CT scan of the appendix to rule out appendicitis. A multiloculated cystic lesion adjacent to the  ...[more]

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