title: Dedifferentiated chondrosarcoma: radiographic features.
abstract: Dedifferentiated chondrosarcomas, unlike ordinary chondrosarcomas, are highly aggressive tumors that frequently metastasize. The lesion is characterized by a lytic intraosseous or extraosseous soft-tissue mass that is devoid of the calcifications that are usually associated with a chondroid tumor. We describe the radiographic and pathologic features of five cases involving dedifferentiated chondrosarcoma.
mesh_terms: D000077:Acetabulum; D000368:Aged; D001859:Bone Neoplasms / Q000000981:diagnostic imaging*; D002813:Chondrosarcoma / Q000000981:diagnostic imaging*; D005269:Femur; D006801:Humans; D006811:Humerus; D008297:Male; D008875:Middle Aged; D011859:Radiography; D012272:Ribs