title: Morphological studies in malignant tumors of the peripheral nervous system (neurofibrosarcoma, malignant schwannoma, schwann cell sarcoma).
abstract: 9 cases of malignant tumors of the peripheral nerve sheaths have been observed and their morphology including ultrastructures have been studied. 5 cases could be classified as neurofibrosarcomas, I as a Schwann cell sarcoma. Another cases may be grouped with the melaninproducing Schwann cell sarcomas and 2 cases with the "epitheloid Schwann cell sarcomas". The latter group, their separation or their connection to soft tissue sarcomas and to the "medullo-epitheliomas" of peripheral nerves are discussed.
mesh_terms: D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D008297:Male; D008543:Melanins / Q000378:metabolism; D008875:Middle Aged; D009442:Neurilemmoma / Q000648:ultrastructure*; D009455:Neurofibroma / Q000648:ultrastructure*; D010525:Peripheral Nerves / Q000648:ultrastructure; D010524:Peripheral Nervous System Neoplasms / Q000648:ultrastructure*
chemical_list: D008543:Melanins