eight with pulmonary metastases at or following diagnosis , one with nodal metastases at diagnosis , two with osteosarcoma following radiation therapy for other malignant tumors , three with osteosarcoma of flat bones , one with parosteal osteosarcoma , and one with multifocal osteosarcoma .
C0029463
osteosarcoma
C0206642
parosteal osteosarcoma