3 de set. de 2015

Myelopathy associated with cervical epidural spinal metastasis of follicular-compact thyroid carcinoma in two dogs

http://www.scielo.br/pdf/cr/v45n8/1678-4596-cr-0103_8478cr20141239.pdf
Camila Tochetto,  Fábio Brum Rosa,  Rosmarini Passos dos Santos,  Alexandre Mazzanti,  Rafael Almeida Fighera, Glaucia Denise Kommers

CIÊNCIA RURAL, v.45, n.8, p. 1487-1491, 2015

 ABSTRACT: This case report describes the clinical, histopathological and immunohistochemical findings in two dogs with myelopathy associated with metastasis of follicular-compact thyroid carcinoma. Microscopically, both primary neoplasms were characterized by polygonal cells arranged in follicles (occasionally filled with eosinophilic colloid-like material) or in sheets. The neoplastic cells had a moderately eosinophilic cytoplasm and there was moderate anisokaryosis and anisocytosis. Additionally, the neoplastic cells were positive for thyroglobulin on immunohistochemistry, confirming the follicular origin of both tumors. This is a very uncommon presentation of this pathological condition. Key words: immunohistochemistry, oncology, thyroid tumor, neurooncology.

 RESUMO:  Este relato de caso descreve os achados clínicos, histopatológicos e imuno-histoquímicos em dois cães com mielopatia associada à metástase de carcinoma de tireoide. Microscopicamente, ambos os neoplasmas primários eram caracterizados por células poligonais arranjadas em folículos (ocasionalmente preenchidos por material eosinofílico semelhante a coloide) ou em folhetos. As células neoplásicas tinham moderado citoplasma eosinofílico e moderada anisocitose e anisocariose. Adicionalmente, as células neoplásicas foram positivas para tireoglobulina, confirmando a origem folicular dos tumores em ambos os cães. Essa é uma apresentação incomum dessa condição patológica. Palavras-chave: imuno-histoquímica, oncologia, tumor de tireoide, neurooncologia.