A rare case of perivulvar hemangiosarcoma in a bitch

Abstract

An 11-year old, Rottweiler bitch was presented to the clinic with the complaint of a huge mass protruding from the left side of the vulvar labium. The bitch had been ovariohysterectomized due to the pyometra 2 years ago. The perivulvar mass was surgically removed by using an electrocautery device under general anesthesia. Macroscopically, the pedunculated mass was 20 cm x 25 cm in diameter, capsulated and slightly firm. Histopathological examination revealed that the mass was a hemangiosarcoma originating from the mucosa. Marked anisocytosis and anisokaryosis were noted in microscopic examination. Immunohistochemically, neoplastic cells showed positive staining for von-Willebrand factor-related antigen. On postoperative 3rd and 12th month follow-up protocols, the female dog was in good health condition and no metastases were detected in any organ. In this report, clinical follow-up, histological and immunohistological examination of a rare perivulvar hemangiosarcoma case in a female dog was presented.