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J. bras. patol. med. lab ; 46(4): 323-328, ago. 2010. ilus
Article in Portuguese | LILACS | ID: lil-557126

ABSTRACT

Dificuldade potencial no diagnóstico histológico de melanomas é a dificuldade em reconhecer variantes pouco frequentes de melanoma. Entre elas, as mais desafiantes incluem exemplos de melanoma desmoplásico, melanoma nevoide, o chamado "melanoma de desvio mínimo", melanomas com proeminente síntese de pigmento ou "melanoma tipo animal" e o nevo azul maligno. Os autores descrevem dois casos de melanoma tipo animal e discute-se a importância do diagnóstico diferencial clinico-histopatológico nesses casos.


A potential diagnostic pitfall in the histological assessment of melanomas is the difficulty in recognizing unusual melanoma variants. Among them, the most challenging examples comprise desmoplastic melanomas, nevoid melanomas, the so-called minimal-deviation melanoma, melanomas with prominent pigment synthesis or animal-type melanoma, and the malignant blue nevus. Two cases of animal type melanoma are reported and the importance of clinical-histopathological differential diagnosis is discussed.


Subject(s)
Humans , Male , Female , Adult , Diagnosis, Differential , Hyperpigmentation , Melanoma/classification , Melanoma/diagnosis
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