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Ciênc. rural ; 38(7): 2072-2075, out. 2008. ilus
Article in Portuguese | LILACS | ID: lil-495129

ABSTRACT

Descreve-se um caso de melanoma maligno anaplásico em uma égua Crioula, tordilha, com 10 anos de idade, com histórico clínico de apatia, perda de peso progressiva, febre, anorexia e dispnéia. Múltiplas massas pigmentadas e não-pigmentadas, bem delimitadas ou infiltrativas, foram observadas no tecido subcutâneo e em vários órgãos. Histologicamente o neoplasma era composto de populações de células fusiformes, redondas ou poliédricas e, menos freqüentemente, de células multinucleadas e "células em anel de sinete". O diagnóstico foi realizado com base nos achados clinicopatológicos e confirmado pela microscopia eletrônica de transmissão.


A case of anaplastic malignant melanoma in a 10-year-old gray mare is described. Clinical signs included depression, progressive weight loss, fever, anorexia, and dyspnea. Multiple circumscribed or infiltrative, pigmented, and non-pigmented tumors were observed in subcutaneous tissue and in several organs. Histological examination revealed a marked variation in neoplastic cell population, which was composed by spindle, round, polyhedrical, and less frequently, multinucleated or signet ring cells. The diagnostic was based up on clinical and pathological findings, and confirmed by transmission electronic microscopy.


Subject(s)
Animals , Female , Horse Diseases , Horses , Melanoma/veterinary
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