Clinical and laboratory approach of Transmissible Venereal Tumor (TVT) in a pregnant bitch
Keywords:
malignant mesenquimal neoplasm, dog, citologic diagnostic, veterinary oncologyAbstract
Transmissible venereal tumor (TVT) is a malignant, common and contagious round cell neoplasm in dogs. A precise and rapid clinical and laboratorial approach is important for a better prognosis of the animal. Therefore, the work aims to present a case report on TVT in the external genitalia of a pregnant bitch. A bitch with no defined racial pattern and no definite age was admitted to the Veterinary Hospital Sylvio Barroso Cardoso (HVSBC) presenting dark and fetid vaginal secretion according to the owner's complaint. During the physical examination it was observed that the vulva was swollen and reddish, without painful stimulation to the touch or change of temperature and there were multiple nodules in the region. In addition, the mucous membranes were pale mucosa. Complete blood count plus biochemical measurements (creatinine and alanine amino transferase), cytological examination and total abdominal ultrasonography were prescribed for the animal. In the hemogram the animal had normocytic and hypochromic anemia, moderate anisocytosis and hypochromia, erythrocyte rouleaux and thrombocytopenia. Biochemical dosages did not change in clinical relevance. Ultrasound examination revealed that the animal was at 45 days of gestation. Cytology was performed by the imprint method and 3 samples were obtained, and based on the observed cellular pattern, it was found that it was a TVT. The animal was treated with diminazene aceturate and vitamin complexes, and was expected to initiate chemotherapy with vincristine sulfate after delivery. The animal gave birth to 7 healthy puppies. After 3 weeks of treatment, the dog had remission of the neoplasia.
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