title: [Melanocytic schwannoma].
abstract: One observation of melanocytic schwannoma in a woman aged 53 is described. The tumour localized in the subcutaneous fat of the crus and looked like an encapsulated node. Electron-microscopic study indicated the signs of schwannoma and the presence of premelanosomes in the tumour cells. Polymorphism of the cells and the increase in mitotic figures was suggesting of a malignant character of the tumour. The differential diagnosis with melanoma should be based on clinical, light-optical and ultrastructural data.
mesh_terms: D005260:Female; D006801:Humans; D007866:Leg; D008545:Melanoma / Q000473:pathology* / Q000648:ultrastructure; D008854:Microscopy, Electron; D008875:Middle Aged; D009442:Neurilemmoma / Q000473:pathology* / Q000648:ultrastructure; D010524:Peripheral Nervous System Neoplasms / Q000473:pathology* / Q000648:ultrastructure
vernacular_title: Melanotsitarnaia shvannoma.