eighteen cases were conventional osteosarcomas , one case was an osteosarcoma that developed in paget 's disease of bone , two cases were metastasis to the lungs of conventional osteosarcomas , five were parosteal osteosarcomas ( and the recurrence of one of them ) , and one was periosteal osteosarcoma .
C0029463
osteosarcoma
C0206642
periosteal osteosarcoma