Sarcoma in Paget's disease of bone.
D001859:Bone Neoplasms; D001842:Bone and Bones; D006801:Humans; D009369:Neoplasms; D010001:Osteitis Deformans / Q000473:pathology*; D012516:Osteosarcoma / Q000473:pathology*
OSTEITIS DEFORMANS/pathology; SARCOMA, OSTEOGENIC/pathology