Endometriosis in cynomolgus monkeys retired from breeding

Ami Y, Y Ami, Suzaki Y, Y Suzaki, Goto N, N Goto
The Journal of veterinary medical science · 1993 · doi:10.1292/jvms.55.7 · PMID:8461429
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⚙ AI-generated summary by gemini-2.5-flash-lite, 2026-06-08 ⓘ

Endometriosis was diagnosed in 28.7% of retired female cynomolgus monkeys, with affected animals being older and having longer times since their last pregnancy.

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⚙ AI-generated deep summary by claude@2026-06, 2026-06-13 · read from full text ⓘ

The study examined 94 female cynomolgus monkeys retired from breeding and identified 27 cases of endometriosis, affecting 28.7% of the animals, with ages ranging from 11 to 23 years (average 15.3 years). Incidence did not differ significantly between monkeys that had undergone cesarean section and those that had not, but affected monkeys had significantly more time since their last pregnancy than non-affected monkeys. Histopathology classified cases into four types: pelvic endometriosis with endometrial cysts (51.8%), pelvic endometriosis invading other organs without cysts (3.7%), uterine adenomyosis (22.2%), and combined pelvic endometriosis with uterine adenomyosis (22.2%). This paper is centrally about endometriosis — it reports histologic patterns of endometriosis and uterine adenomyosis in retired breeding cynomolgus monkeys.

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Abstract

Twenty-seven cases of endometriosis were found in 94 female cynomolgus monkeys retired from breeding. The ages of the affected monkeys (28.7% of all the monkeys) ranged from 11 years to 23 years of age with an average of 15.3 years. There was no significant difference in the incidence of endometriosis between groups which had or had not undergone a cesarean section. Time after the last pregnancy was significantly longer in the affected monkeys than in the non-affected ones. These cases were histopathologically classified into four types: 1) pelvic endometriosis with formation of endometrial cysts (51.8% of the affected monkeys), 2) pelvic endometriosis invading other organs without formation of endometrial cysts (3.7%), 3) uterine adenomyosis (22.2%), 4) combined pelvic endometriosis and uterine adenomyosis (22.2%).
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cynomolgus monkey, endometriosis 1993 Volume 55 Issue 1 Pages 7-11 Details

Abstract

Twenty-seven cases of endometriosis were found in 94 female cynomolgus monkeys retired from breeding. The ages of the affected monkeys (28.7% of all the monkeys) ranged from 11 years to 23 years of age with an average of 15.3 years. There was no significant difference in the incidence of endometriosis between groups which had or had not undergone a cesarean section. Time after the last pregnancy was significantly longer in the affected monkeys than in the non-affected ones. These cases were histopathologically classified into four types; 1) pelvic endometriosis with formation of endometrial cysts (51.8 % of the affected monkeys), 2) pelvic endometriosis invading other organs without formation of endometrial cysts (3.7%), 3) uterine adenomyosis (22.2%), 4) combined pelvic endometriosis and uterine adenomyosis (22.2%). © The Japanese Society of Veterinary Science Favorites & Alerts Recently viewed articles

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Condition tags

endometriosisadenomyosis

MeSH descriptors

Endometriosis Macaca fascicularis Monkey Diseases Pelvic Neoplasms Uterine Neoplasms Age Factors Animals Breeding Endometriosis Endometriosis Endometriosis Female Monkey Diseases Monkey Diseases Pelvic Neoplasms Pelvic Neoplasms Pelvic Neoplasms Uterine Neoplasms Uterine Neoplasms Uterine Neoplasms

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