title: Angiosarcoma arising in a plexiform neurofibroma: a case report.
abstract: A left cervical mass developed in a 14-year-old white boy with stigmata of von Recklinghausen's disease. Excision biopsy examination showed a plexiform neurofibroma with angiosarcoma. Ultrastructural studies confirmed the endothelial nature of the malignant cells.
mesh_terms: D000293:Adolescent; D001132:Arm / Q000294:innervation / Q000473:pathology; D002471:Cell Transformation, Neoplastic; D006258:Head and Neck Neoplasms / Q000473:pathology / Q000648:ultrastructure; D006394:Hemangiosarcoma / Q000473:pathology* / Q000648:ultrastructure; D006801:Humans; D008297:Male; D009423:Nervous System Neoplasms / Q000473:pathology* / Q000648:ultrastructure; D009455:Neurofibroma / Q000473:pathology* / Q000648:ultrastructure