Extragenital transmissible venereal tumor in dog: case report

Abstract

Transmissible venereal tumor (TVT) is a round cell neoplasm that affects dogs, mainly with access to the street, because tumor implantation happens during coitus or by intimate social interaction with another sick canid. It mainly affects the genital region, but there are extragenital reports. Thus, this work aims to report a case of TVT in the eyelid and cervical region of a dog, male, non-castrated, adult, SRD, with access to the street, without previous history, positive for cynomosis, which presented ectoparasites, penile bloody secretion with bulb volume increase, nodular tumor ulcerated in cervical region, left eye with third eyelid volume increase and some small nodules in upper eyelid. Through cytology and histopathology, TVT was diagnosed in the samples analyzed. For treatment, five sessions of chemotherapy with Vincristine sulfate were carried out, which the animal responded with an improvement in clinical signs one week after the first session. Therefore, the importance of cytology and histopathology for diagnostic confirmation of TVT and of care in the analysis of ocular and skin tumors is emphasized, because, even if the occurrence of this neoplasia is common only in the genital region, it can present itself in other locations.