title: Case report 347. Dedifferentiated chondrosarcoma: grade 4 fibrosarcoma arising in grade 1 chondrosarcoma (femur).
mesh_terms: D000368:Aged; D002813:Chondrosarcoma / Q000000981:diagnostic imaging* / Q000473:pathology; D005260:Female; D005266:Femoral Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology; D005269:Femur / Q000473:pathology; D005354:Fibrosarcoma / Q000000981:diagnostic imaging* / Q000473:pathology; D006801:Humans; D011859:Radiography