Atypical monocystic granulosa-theca cell tumor accompanied by pyometra in a Holstein cow

Komiya S., Osawa T., Mita N., Ueki A., Shimizu S., Kato K., Anan T., Sasaki J., Goryo M., Izaike Y.

doi:10.4190/jjvc.31.24

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Other Title

ホルスタイン種経産牛における子宮蓄膿症を伴う非定型単胞性顆粒膜細胞腫の一例
ショウレイホウコクホルスタインシュケイサンギュウニオケルシキュウチクノウショウオトモナウヒテイケイタンホウセイカリュウマクサイボウシュノイチレイ

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Abstract

A 12-year-old multiparous Holstein cow weighing 710 kg that had shown no signs of estrus after the last calving on July 16, 2007 was subjected to clinical and pathological observations. On October 16, rectal palpation showed a large mass in the left ovary, and a distended and flaccid uterus. Vaginal examination and ultrasonography revealed pyometra with a cystic left ovary and a right ovary with corpora lutea. The administration of a prostaglandin F_2αanalog alleviated the pyometra by November 6 ; the left ovary cyst grew to about 20 cm diameter, and maintained that size. An autopsy on December 18 revealed chronic inflammation of the endometrium and a single large cyst (18×15.5×12 cm) in the left ovary. The cyst (1980 g) contained 1983 ml of a limpid yellowish-brown liquid. The ovary became flattened and weighed 77 g after aspiration of the liquid. The cyst wall was less than 1mm thick and the ovary had no follicle or corpus luteum. The right ovary had a regressing and a functional corpus luteum. The left ovary cyst was diagnosed as granulosa-theca cell tumor by histopathological analysis. This cow was considered to have a unilateral monocystic granulosa-theca cell tumor accompanied by pyometra, with a functional corpus luteum in the right ovary.

Journal

Japanese Journal of Veterinary Clinics

Japanese Journal of Veterinary Clinics 31 (1), 24-29, 2008

Japanese Society of Large Animal Clinics / Large Animal Clinic Research Association

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