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Uterine adenomyosis in an orang‐utan ( Pongo abelii/pygmaeus )
Author(s) -
Graham KJ,
Hulst FA,
Vogelnest L,
Fraser IS,
Shilton CM
Publication year - 2009
Publication title -
australian veterinary journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.382
H-Index - 59
eISSN - 1751-0813
pISSN - 0005-0423
DOI - 10.1111/j.1751-0813.2008.00370.x
Subject(s) - adenomyosis , medicine , hysterectomy , gynecology , asymptomatic , myometrium , obstetrics , endometriosis , uterus , surgery
A 48‐year‐old, multiparous, female hybrid orang‐utan ( Pongo abelii/pygmaeus ) was investigated after a 3‐year history of irregular and excessively heavy menstrual bleeding. Opportunistic pelvic examinations over a 2.5‐year period were non‐diagnostic. Medical therapy was not effective. A subtotal hysterectomy with bilateral salpingo‐ovariectomy was performed. A pedunculated mass spanning 90% of the uterine lumen was seen grossly, and histopathology confirmed uterine adenomyosis. Adenomyosis is defined as the ectopic occurrence or diffuse implantation of endometrial tissue, including glands and stroma, into the myometrium. It is common in older, usually premenopausal, multiparous women and is frequently associated with other uterine pathology, including endometrial hyperplasia and leiomyomas. The most common clinical signs are dysmenorrhoea and heavy menstrual bleeding; however, up to 35% of women are asymptomatic. Diagnosis is difficult and requires myometrial sampling and an experienced pathologist. A hysterectomy in this case was diagnostic and curative. There have been few reports of uterine adenomyosis in non‐human primates and none reported in an orang‐utan. Uterine adenomyosis should be considered in the differential diagnosis in any multiparous, aged, non‐human female primate with irregular and excessively heavy menstrual bleeding, and hysterectomy with bilateral salpingo‐ovariectomy is recommended as a diagnostic and therapeutic solution.

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