Endomyometriosis (“Uterus - like mass”) in an XY Male

Raul S González, Cindy L Vnencak-Jones, Cindy L. Vnencak‐Jones, Chanjuan Shi, Oluwole Fadare
International journal of surgical pathology · 2014 · vol. 22(5) , pp. 421–426 · doi:10.1177/1066896913501385 · PMID:24651910 · W2030586555
article OA: closed CC0 ⤵ 15 in-corpus citations
View on OpenAlex View on PubMed View at publisher
⚙ AI-generated summary by claude@2026-06, 2026-06-08 ⓘ

This paper describes a unique case of endomyometriosis in a 52-year-old man, characterized by a "uterus-like mass" found in his inguinal area, showing endometrial glands and stroma within a muscular wall.

One-sentence paraphrase of the abstract; not a substitute for reading it. No clinical advice. How this works

Abstract

Male endometriosis and endomyometriosis (also termed "uterus-like mass") are 2 unusual manifestations of endometriosis. We report a case of male endomyometriosis with immunohistochemical and molecular confirmation. A 52-year-old man presented with stabbing pelvic pain. Computed tomography scan showed a mass in the right inguinal area, at the site of prior hernia repair. The lesion was tubular in shape, with a thick muscular wall and a central blood-filled lumen. Microscopically, the tissue showed layers of concentric smooth muscle, with endometrial glands and stroma lining the lumen. Many theories have been proposed regarding the etiology of both endomyometriosis and male endometriosis, including remnant rests of Müllerian tissue and metaplasia. Cases of male endometriosis typically have been linked to estrogen therapy for prostate cancer. Our patient had a history of cirrhosis and took spironolactone, possibly leading to an altered hormonal state that interacted with a reactive/metaplastic process at a site of prior surgery.

My notes (saved in your browser only)

Condition tags

endometriosis

MeSH descriptors

Endometrium Muscle, Smooth Endometrium Endometrium Female Humans Male Middle Aged Muscle, Smooth Muscle, Smooth Treatment Outcome

Citation neighborhood

Papers in the corpus that this work cites (lower rings, blue) and that cite this one (upper rings, green). Dot size scales with the paper's in-corpus citation count — bigger dot = more influential within the endo/adeno field. Click a dot to open that paper. [ expand to 2 hops ] — adds papers reached through this work's immediate citers/citees. Heavier; up to 60 extra dots.

References (35)

Cited by (15)

Source provenance

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: 2026-05-13T22:18:35.150238+00:00
License: CC0 · commercial use OK