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Case Reports in Obstetrics and Gynecology
Volume 2018, Article ID 2083121, 6 pages
Case Report

Endometriosis in a Man as a Rare Source of Abdominal Pain: A Case Report and Review of the Literature

1Creighton University School of Medicine, Omaha, NE, USA
2Division of Urologic Surgery, Creighton University School of Medicine, Omaha, NE, USA

Correspondence should be addressed to Michael Feloney; moc.oohay@u4codug

Received 9 December 2017; Accepted 8 January 2018; Published 31 January 2018

Academic Editor: Giampiero Capobianco

Copyright © 2018 Christina Rei et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Endometriosis occurs when a tissue resembling endometrial glands and stroma grows in ectopic sites, commonly causing infertility and pain. This condition is most often seen in women of reproductive age, involving pelvic sites such as the ovaries, broad ligaments, uterosacral ligaments, and posterior cul-de-sac. Very rarely, endometriosis has also been found in the lower genitourinary tract of men. A 40-year-old man presented to his primary care physician with abdominal pain. Further imaging discovered a midline mass. Surgical removal of the mass and histological investigations led to the diagnosis of endometriosis. There are multiple theories on the etiology of both female and male endometriosis. The prevailing risk factor proposed in previous cases of male endometriosis is prolonged exposure to estrogen therapy. Should endometriosis become symptomatic, cessation of estrogen therapy and careful surgical intervention may successfully relieve the associated symptoms.