title: Malignant giant cell tumor of bone: ultrastructural and immunohistologic evidence of histiocytic origin.
abstract: A malignant giant cell tumor of the carpal bones metastatic to the lung in a 23-year-old woman is described. Findings from ultrastructural and cell marker studies support the concept that this tumor is of histiocytic origin.
mesh_terms: D000328:Adult; D001859:Bone Neoplasms / Q000648:ultrastructure*; D002348:Carpal Bones; D005260:Female; D005870:Giant Cell Tumors / Q000648:ultrastructure*; D006644:Histiocytes / Q000648:ultrastructure; D006801:Humans