title: END-DIFFERENTIATION OF BONE SARCOMAS IN RELATION TO TUMOUR DISTRIBUTION AND PATIENT AGE.
mesh_terms: D000293:Adolescent; D001859:Bone Neoplasms; D002813:Chondrosarcoma; D004838:Epiphyses; D005354:Fibrosarcoma; D006801:Humans; D009369:Neoplasms / Q000453:epidemiology*; D012516:Osteosarcoma; D011859:Radiography
keywords: ADOLESCENCE; BONE NEOPLASMS; CHONDROSARCOMA; EPIPHYSES; FIBROSARCOMA; NEOPLASM STATISTICS; RADIOGRAPHY; SARCOMA, OSTEOGENIC