title: Osteogenic sarcoma after the age of 50: a radiographic evaluation.
abstract: Twenty-four cases of primary osteosarcoma in individuals over the age of 50 are described. This represents 6% of all osteosarcomas and 80% of osteosarcomas occurring over the age of 50 at this institution. Radiographically, features were similar to osteosarcoma in younger individuals. Females were more frequently affected than males (2.4:1). The radiographic features are discussed in detail, and the differential diagnosis outlined.
mesh_terms: D000367:Age Factors; D000368:Aged; D001859:Bone Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology; D005260:Female; D005266:Femoral Neoplasms / Q000000981:diagnostic imaging; D006801:Humans; D008297:Male; D008339:Mandibular Neoplasms / Q000000981:diagnostic imaging; D008875:Middle Aged; D012516:Osteosarcoma / Q000000981:diagnostic imaging* / Q000473:pathology; D010386:Pelvic Neoplasms / Q000000981:diagnostic imaging; D011859:Radiography