Canine ovarian dysgerminoma

ABSTRACT: This research aimed to describe a clinical case of ovarian dysgerminoma in a bitch, by showing clinical, ultrasound, surgical and pathological findings. The research also sought to emphasize the importance of establishing an early and definitive diagnosis through histopathology, establishing appropriate protocols for each patient. Ovarian tumors have a low incidence in dogs and cats. Dysgerminomas are a type of ovarian germ cell tumor. They develop in dogs of variable age, that may present clinical signs of hormonal imbalance such as persistent estrus, or pyometra. Prognosis is good in animals that undergo surgery and show no evidence of metastasis. This article presents a clinical case of a 6-year-old English Bulldog with persistent estrus for 2 months, and slightly depressed mental state. Ultrasound revealed the presence of a mass on the left ovary and uterine content. Ovariohysterectomy was performed and the mass was submitted to histopathological exam, which diagnosed an ovarian dysgerminoma.