[Dermal myxoma of nerve sheats (neurothecoma)].
The histological study of a painful cutaneous nodule located in the interscapular region, which had been present for 20 years in a 59-year old male patient has show typical features of dermal myxoma of the nerve sheaths. This was a lobulated myxomatous tumour with fusiform and dendritic cells plus a few epithelioid and multinucleate cells. Immunostaining was positive for the S100 protein and negative for factor XIIIa and EMA. These data suggest that this tumour was of schwannian origin.
Tellechea
O
O
Clinique de Dermatologie, Hospital da Universidade, Coimbra, Portugal.
Reis
J P
JP
Baptista
A P
AP
D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D008875:Middle Aged; D009186:Myelin Sheath; D009232:Myxoma / Q000473:pathology*; D009455:Neurofibroma / Q000473:pathology; D010524:Peripheral Nervous System Neoplasms / Q000473:pathology*; D012878:Skin Neoplasms / Q000473:pathology*
Myxome dermique des gaines nerveuses (neurothécome).