Morphological patterns and malignancy criteria of transmissible venereal tumor in cytopathological and histopathological exams
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Data
2013
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Resumo
The aim of this study was to identify morphological patterns and malignancy criteria of the TVT in
cytopathological and histopathological evaluations and relate these characteristics to clinical evolution and response
to chemotherapy. Regarding studied animals, sixteen dogs were female and four were male. The age of the animals
ranged between one and ten years old. Considering breed, 80% of the dogs were mongrel dogs and 20% were of other
breeds. It was found that the cytological samples allowed a better characterization of the cell type than histological ones.
The plasmacytoid was the most common morphological type of TVT, followed by the lymphocytoid and mixed
standards. There was no difference among the scores for the malignancy criteria and morphological types of TVT. Regarding
response to chemotherapy, no morphological type of the TVT showed any difference, but the TVT presents morphological
peculiarities that may interfere with tumor behavior, especially those related to increased aggressiveness and that are
observed in the plasmacytoid TVT.
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Dog, Round cell tumor, Morphology, Cão, Neoplasia de células redondas, Morfologia
Citação
LIMA, Caroline Rocha de Oliveira; RABELO, Rogério Elias; VULCANI, Valcinir Aloisio Scalla; FURTADO, Adriana Pereira; HELRIGEL, Panmera Almeida; BRITO, Luiz Augusto Batista; MOURA, Veridiana Maria Brianezi Dignani de. Morphological patterns and malignancy criteria of transmissible venereal tumor in cytopathological and histopathological exams. Brazilian Journal of Veterinary Research and Animal Science, São Paulo, v. 50, n. 3, p. 238-246, 2013.