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Tumor Venéreo Transmissível (TVT) nasal com metástase óssea em um cão / Nasal transmissible venereal tumor (TVT) with bone metastasis in a dog

Silva, Iury de Azevedo Rodrigues da; Marinho, Amanda Freitas Santiago; Fonseca, Thaisa de Oliveira Paes da; Tôrres, Lolaide Alves Garcia; Carvalho, Eliane do Socorro Pompeu de; Marques, Larissa Coelho; Paredes, Laura Jamille Argolo.
Acta sci. vet. (Online); 50(suppl.1): Pub. 740, 18 jan. 2022. ilus
Artigo em Português | VETINDEX | ID: vti-33335


Background: Transmissible venereal tumor (TVT) is a highly contagious round cell neoplasm that affects dogs, and itis usually transmitted through coitus. The tumor is mainly located in the genital area; however, the neoplasm can also beextragenital, affecting the nose, mouth, and eyes, as well as the skin and superficial lymph nodes. Cytological examinationis the most commonly used method for definitive diagnosis due to its low cost and fast execution. Chemotherapy, radiotherapy, surgical resection, and other procedures such as cryosurgery are the possible treatment options. The objective ofthis report was to describe a case of extragenital TVT with nasal primary site and metastasis in the bone tissue in a dogtreated at a private veterinary hospital in the city of Belém, Pará, Brazil.Case: A 6-year-old male domiciliary Labrador Retriever dog, weighing 24.2 kg, received oncologic treatment in a privateveterinary hospital in the city of Belém, Pará, Brazil. The animal had a history of neoplastic disease, and he had undergoneTVT resection associated with chemotherapy treatment more than 3 years ago. The clinical examination revealed a volumeincrease in the periorbital region, left lateral ocular displacement, left nostril excessive epistaxis, recurrent sneezing, cough,and pain signs, and tumor metastasis was suspected. Complementary exams of oncological cytology, computed tomography(CT), hemogram, and serum biochemistry were requested for diagnosis and staging of the condition, and supportive therapywas prescribed. The cytological report showed a dense population of neoplastic round cells with characteristics of TVT. CTindicated the presence of a heterogeneous hypodense mass with irregular contours and partially defined limits, with slightuptake of the intravenously injected contrast medium that obliterated the nasal cavity, maxillary recess, nasopharyngealmeatus, frontal sinus, and sphenoid sinus on the left side...(AU)
Biblioteca responsável: BR68.1
Localização: BR68.1