A case of malignant dysgerminoma in a slaughtered dairy cow

Jung, Ji-Youl; Her, Ji-Woong; Jeong, Yea-Ji; Ku, Kyung-Nyer; Choi, Kwon-Rac; So, Byung-Jae; Yoon, Soon-Seek

doi:2015.55.2.149

Korean J Vet Res > Volume 55(2); 2015 > Article

Case report

Korean Journal of Veterinary Research 2015;55(2):149-152.
DOI: https://doi.org/10.14405/kjvr.2015.55.2.149 Published online June 24, 2015.

A case of malignant dysgerminoma in a slaughtered dairy cow

Ji-Youl Jung¹, Ji-Woong Her¹, Yea-Ji Jeong¹, Kyung-Nyer Ku², Kwon-Rac Choi², Byung-Jae So¹, Soon-Seek Yoon¹

¹Division of Animal Disease Diagnosis, Animal and Plant Quarantine Agency
²Gyeonggi-do Veterinary Service

도축 젖소에서 발생한 악성 난소생식세포종 증례보고

정지열¹, 허지웅¹, 정예지¹, 구경녀², 최권락², 소병재¹, 윤순식¹

¹농림축산검역본부 질병진단과
²경기도 축산위생연구소

Abstract

An abnormally enlarged right ovary and a mass in fat surrounding the right kidney were discovered in a dairy cow during routine postmortem examination at slaughter. The ovary was dark reddish and multinodular in shape. Numerous cystic structures were identified in the mass. Histopathologically, the ovary was completely replaced with large, uniform, polyhedral neoplastic cells containing vesicular nuclei and prominent nucleoli. The mitotic index was high. In the lymphatic vessels, tumor emboli were observed. Another mass in the fat surranding the right kidney had the same histological features as the ovarian mass. This animal was diagnosed with malignant dysgerminoma and metastasis to other peritoneal organs.

Key Words: dairy cow, dysgerminoma, metastasis, ovary