title: Schwann cell features in neurotropic melanoma.
abstract: Schwann cell features were found on ultrastructural examination of a neurotropic melanoma (de novo type) of the lip. A neurotropic pattern of growth was retained in metastatic tumors in lymph nodes and lung. Melanin was not demonstrable in extra-epidermal tumor cells.
mesh_terms: D000328:Adult; D003937:Diagnosis, Differential; D006801:Humans; D008048:Lip Neoplasms / Q000556:secondary / Q000648:ultrastructure*; D008207:Lymphatic Metastasis; D008297:Male; D008545:Melanoma / Q000556:secondary / Q000648:ultrastructure*; D008854:Microscopy, Electron; D009442:Neurilemmoma / Q000556:secondary / Q000648:ultrastructure*; D012583:Schwann Cells / Q000648:ultrastructure*; D012867:Skin / Q000294:innervation; D012878:Skin Neoplasms / Q000556:secondary / Q000648:ultrastructure*