Sarcomatous transformation of Paget's disease of the skull.
D001859:Bone Neoplasms; D006801:Humans; D010001:Osteitis Deformans; D012516:Osteosarcoma; D012509:Sarcoma; D012886:Skull; D012888:Skull Neoplasms
CRANIUM, TUMORS; OSTEITIS DEFORMANS; SARCOMA, OSTEOSARCOMA