2017 Volume 70 Issue 3 Pages 170-174
A nine-year-old female rabbit (Oryctolagus cuniculus) presented with urinary incontinence. Ascites and uterine mass with calcification were observed through abdominal radiography and ultrasonography. Carcinomatous neoplastic cells were observed from cytology and cell block technique for ascites. The uterine mass was composed of carcinomatous and sarcomatous components with osteochondromatous differentiation on histological examination following ovariohysterectomy. Based on the histological findings, the case was diagnosed as a malignant mixed Müllerian tumor, heterologous subtype, supposed to be extremely rare.