Arrhenoblastoma in a mare
Mills, J.H.; Fretz, P.B.; Clark, E.G.; Ganjam, V.K.
Journal of the American Veterinary Medical Association 171(8): 754-757
1977
ISSN/ISBN: 0003-1488 PMID: 200593 Document Number: 116644
An ovarian neoplasm measuring 10 by 8 by 6 cm was surgically removed from a 14-year-old Appaloosa mare. For 2 years prior to surgery, the mare had manifested marked behavioral changes, becoming aggressive toward other broodmares. Histologically, the tumor was found to be an arrhenoblastoma. Preoperative endocrinologic findings (high serum testosterone and low serum estradiol concentrations) supported the diagnosis.