Tumor venéreo transmissível em sistema respiratório superior de canino

• DOI: 10.31533/pubvet.v18n05e1593
• Publication Date: 2024-04-25T09:55:16Z
• Authors: Nayana Pereira Am...; Antônio Cavalcant...; Lara Guimarães; José Thales Borge...; Victória Caroliny...; Maria Ester Macie...

Transmissible Venereal Tumor (TVT) is one of the most common neoplasms that affect dogs. It has no predilection for sex or breed, but it has a higher incidence in free-ranging dogs that have access to the outdoors. Transmission occurs through the implantation of tumor cells from one animal carrying the disease to another during intercourse, or through contact between mucous membranes during the habit of licking the genitalia affected by the tumor. They generally present on the genitalia, and can also occur in extragenital regions, such as the snout, eye, mouth and subcutaneous tissue. The tumor has a multilobulated appearance, resembling cauliflower, is friable, hemorrhagic and grows irregularly. The diagnosis is made through anamnesis, physical examination, tumor cytology and histopathology for the definitive diagnosis. The treatment of choice is chemotherapy with vincristine sulfate, applied intravenously, weekly, always preceding a blood count to analyze the patient's general health status. Considering that TVT is not commonly described in the nasopharyngeal region of dogs, this work aims to report the case of a four-year-old Shitzu dog who presented the tumor, with conformations not characteristic of a TVT, in the nasopharyngeal region, diagnosed through tomography and histopathology of the tumor, removed after surgical incision.