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Ciência Rural

versão On-line ISSN 1678-4596

Resumo

PIVA, Manoela Marchezan et al. Metastatic mammary carcinoma in a cow. Cienc. Rural [online]. 2017, vol.47, n.7, e20160736.  Epub 29-Maio-2017. ISSN 1678-4596.  http://dx.doi.org/10.1590/0103-8478cr20160736.

Mammary gland neoplasms in cattle are rarely observed in the field veterinary diagnostics routine. Therefore, the objective of this study is to report a metastatic mammary carcinoma in a fourteen-year-old Holstein cow in the state of Santa Catarina, Brazil. The animal was diagnosed by the field veterinarian with clinical mastitis that was unresponsive to treatment, and was euthanized due to the poor prognosis. At the necropsy, multiple yellow, firm, and sometimes friable nodules, ranging from 0.1 to 20cm were observed in all mammary glands, lymph nodes, kidneys, spleen, liver, pancreas, mediastinal lymph nodes, heart, and lungs. The final diagnosis of mammary carcinoma was established through the association of clinical, necropsy, histopathological, and immunohistochemical findings. Differential diagnoses included diseases such as bovine tuberculosis and chronic fungal or bacterial mastitis.

Palavras-chave : cattle diseases; mammary neoplasia; metastasis; chronic mastitis; cytokeratin..

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