Abstract
ABSTRACT: Canine transmissible venereal tumors (TVT) have a high incidence in Brazil. This is partly due to the large population of stray dogs and the ineffectiveness of epidemiological control programs. This study aimed to describe the epidemiological data, clinical manifestations, and treatments used in dogs affected by TVT. Data were retrospectively collected from the 2015-2020 records of the Veterinary Hospital of the Federal Rural University of Rio de Janeiro. A total of 252 dogs were diagnosed with TVT during the study period. Of these, 81.3% were mixed-breed, 50.4% were males, and 88.9% were young or adult animals. The genital region only was affected in 77.3% of cases. Exclusively extragenital lesions were observed in 22.6% of cases. Among the animals seen, 40.1% received no treatment. Of those treated, 99.3% underwent a vincristine sulfate protocol, and in 77.2%, the treatment resulted in total remission of the neoplasm after 4 to 6 chemotherapy sessions. It was concluded that TVT is a neoplasm most often seen in mixed-breed dogs and located in the genital region, with hemorrhagic secretion being the main clinical sign reported by owners. Vincristine sulfate is currently the most used therapy, with high efficacy. However, despite the good prognosis, there was a high rate of non-adherence or abandonment of treatment, and this is an important factor to be considered and addressed by veterinarians.
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