ASPECTOS CLÍNICO-PATOLÓGICOS DO TUMOR VENÉREO TRANSMISSÍVEL CANINO COM METÁSTASE EXTRAGENITAL: RELATO DE TRÊS CASOS.

Abstract

The transmissible venereal tumor (TVT) is a round cell neoplasm that predominantly affects the external genital mucosa of male and female dogs. It is contagious, sexually transmitted and has no predilection for race or sex. The extragenital location is usually associated with tumor metastasis. The rate of metastasis is low, varying from 0 to 17% of cases and, when it occurs, it is frequently in the nasal and oral cavity, eyes, skin, regional lymph nodes, liver, spleen, lung, brain, adenohypophysis, muscles, mucosa anal, ovarian, uterus, peritoneum and perianal region indicating tumor malignancy. The present study reports three cases of TVT with an extra genital location. The cases present localization genital and extragenital of the tumor, indicating metastasis. Cases 1 and 2 show extragenital location in the ocular globe and case 3 in the breast. The diagnosis was made through aspiration cytology and all the masses presented cells compatible with the transmissible venereal tumor.