title: Osteosarcoma of meninges: clinical, light, and ultrastructural observations of a case.
abstract: A primary osteosarcoma of the meninges based on clinical, light, and ultrastructural findings is reported. The neoplasm appears to complete Cushing and Eisenhardt's postulate and expectation of a malignant counterpart of osteoblastic meningioma. The neoplasm lends support to the concept of a primitive multipotential mesenchymal cell in the meninges capable of giving rise to every variety of neoplasms within that potential.
mesh_terms: D003094:Collagen; D003593:Cytoplasm / Q000648:ultrastructure; D005260:Female; D006801:Humans; D008577:Meningeal Neoplasms / Q000473:pathology* / Q000648:ultrastructure; D008579:Meningioma / Q000473:pathology* / Q000648:ultrastructure; D008875:Middle Aged; D010006:Osteoblasts / Q000473:pathology / Q000648:ultrastructure; D012516:Osteosarcoma / Q000473:pathology* / Q000648:ultrastructure
chemical_list: D003094:Collagen