[Dermal nerve sheath myxoma. (Neurothekeoma)].
A 59-year-old male presented with a painful nodule on the interscapular area of 20 year duration. The microscopic examination showed a myxomatous lobulated tumor composed of dendritic fusiform cells with some epithelioid and multinucleated cells typical of a nerve sheath myxoma. Immunohistochemical analysis demonstrated reactivity for S100 protein. Neither factor XIIIa nor epithelial membrane antigen (EMA) expression was found in the tumor cells. These findings suggest a schwannian origin for this tumor.
Tellechea
O
O
Clínica de Dermatologia, Hospitais da Universidade, Coimbra.
Reis
J P
JP
Baptista
A P
AP
D006801:Humans; D008297:Male; D008875:Middle Aged; D009232:Myxoma / Q000473:pathology*; D009423:Nervous System Neoplasms / Q000473:pathology*
Mixoma dérmico das bainhas nervosas. (Neurotecoma).