Vaginal leiomyosarcoma in a cow from Uberlândia, Minas Gerais, Brazil
The clinical, pathological, and immunohistochemical findings associated with a vaginal leiomyosarcoma in a 12-year-old, Senepol breed of cow from Uberlândia, Minas Gerais are described. The animal had a large ulcerative neoplastic growth that originated between the base and the left-lateral vaginal...
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Veröffentlicht in: | Ciência rural 2013-05, Vol.43 (5), p.897-901 |
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Zusammenfassung: | The clinical, pathological, and immunohistochemical findings associated with a vaginal leiomyosarcoma in a 12-year-old, Senepol breed of cow from Uberlândia, Minas Gerais are described. The animal had a large ulcerative neoplastic growth that originated between the base and the left-lateral vaginal wall. Histopathology revealed a tumor formed by muscle-like cells that demonstrated cellular pleomorphism, anisokaryosis, prominent and multiple nucleoli, with rare tumor giant cells. The neoplastic growth invaded adjacent adipose tissue, and contained areas of hemorrhage with discrete accumulations of inflammatory cells. By immunohistochemistry, most neoplastic cells expressed actin, while immunoreactivity to desmin was weakly expressed. These findings support a diagnosis of leiomyosarcoma, and represent the first description of a bovine vaginal leiomyosarcoma from Brazil.
No presente trabalho, foram descritos os achados clínicos, patológicos e imunohistoquímicos de uma vaca da raça Senepol, 12 anos, com leiomiossarcoma vaginal, de Uberlândia, Minas Gerais. O animal apresentou massa ulcerada localizada entre a base e parede lateral-esquerda da vagina. A histopatologia revelou uma neoplasia formada por células fusiformes a arredondadas que demonstraram pleomorfismo celular, anisocariose, nucléolos proeminentes e múltiplos, com raras células gigantes tumorais. O crescimento neoplásico invadiu o tecido adiposo adjacente e continha áreas de hemorragia com discreto acúmulo de células inflamatórias. A maioria das células neoplásicas expressou actina na avaliação imunohistoquímica, enquanto a imunoreatividade para desmina foi fracamente expressa. Os achados suportam o diagnóstico de leiomiossarcoma e representa a primeira descrição de leiomiossarcoma vaginal em bovinos no Brasil. |
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ISSN: | 1678-4596 1678-4596 |
DOI: | 10.1590/S0103-84782013005000049 |