Malignant degeneration of so-called benign osteoblastoma.
D000293:Adolescent; D000328:Adult; D005260:Female; D050723:Fractures, Bone / Q000150:complications*; D006801:Humans; D007085:Ilium / Q000473:pathology; D008159:Lumbar Vertebrae / Q000293:injuries*; D008297:Male; D012516:Osteosarcoma; D010386:Pelvic Neoplasms / Q000473:pathology*