Endometrioma of uterine serosa in a woman with mosaic Turner's syndrome receiving hormone replacement therapy: Case report

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AI-generated summary by claude@2026-06, 2026-06-07

A mosaic Turner's syndrome patient on hormone replacement therapy developed a pedunculated serosal endometrioma and pelvic endometriosis after gonadectomy.

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Abstract

Endometriosis in Turner's syndrome patients has only been reported in five isolated cases. We present here an endometrioma on the uterine serosa and pelvic endometriosis arising in a mosaic Turner's patient receiving hormone replacement therapy (HRT). The 24 year old patient with mosaic Turner's syndrome [45,X; 46,X pseudo dicentric Y (q11.23)], on cyclic HRT after laparoscopic gonadectomy 5 years previously, was found to have an adnexal mass on routine examination. Given her history, due to the fear of a malignant process arising from a potential gonadal remnant, she underwent a laparoscopy and was found to have a 5 cm serosal endometrioma arising on a stalk from the uterine fundal surface as well as pelvic endometriosis. De-novo endometrioma and endometriosis occurred in a mosaic Turner's patient after gonadectomy on cyclic HRT. The presentation was also unusual with a pedunculated endometrioma arising from the uterine serosa. Due to the fact that the patient did have cyclic menstrual flow, her endometriosis may have arisen from retrograde menstruation or coelomic metaplasia induced by exogenous hormones.

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Condition tags

mesh:D004715endometriosisendometrioma

MeSH descriptors

Endometriosis Estrogen Replacement Therapy Mosaicism Turner Syndrome Turner Syndrome Uterine Diseases Adult Endometriosis Endometriosis Endometriosis Estrogen Replacement Therapy Estrogens, Conjugated (USP) Estrogens, Conjugated (USP) Female Humans Medroxyprogesterone Acetate Medroxyprogesterone Acetate Turner Syndrome Uterine Diseases Uterine Diseases

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Source provenance

europepmc
last seen: 2026-06-04T01:30:01.192114+00:00
openalex
last seen: 2026-06-04T00:00:01.174412+00:00
pubmed
last seen: 2026-05-13T22:13:01.552487+00:00
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