Medullary fibrosarcoma of bone.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D001862:Bone Resorption; D002648:Child; D005260:Female; D005354:Fibrosarcoma / Q000453:epidemiology; D006801:Humans; D008297:Male; D008875:Middle Aged; D009362:Neoplasm Metastasis; D009364:Neoplasm Recurrence, Local; D012516:Osteosarcoma / Q000000981:diagnostic imaging / Q000453:epidemiology* / Q000401:mortality / Q000473:pathology / Q000628:therapy; D011859:Radiography; D012737:Sex Factors