"An osteosarcoma arising from the soft tissues and remains confined to the primary anatomical site.NCI" . _:b738280 _:b732861 . "C0855051"^^ . "Neoplastic Process"^^ . "Non-Metastatic Extraosseous OsteosarcomaSYNCI" . _:b636207 . "Non-Metastatic Extraskeletal Osteosarcoma"^^ . "Non-Metastatic Extraskeletal OsteosarcomaPTNCI" . "Non-Metastatic Extraskeletal Osteosarcoma"^^ . _:b636207 _:b738280 . _:b732861 . . "Non-Metastatic_Extraskeletal_Osteosarcoma"^^ . "Malignant"^^ . "Extraskeletal Osteosarcoma, NonmetastaticSYNCI" . _:b732861 . "Non-Metastatic Extraskeletal Osteogenic SarcomaSYNCI" . _:b738280 . _:b636207 . "C8809"^^ .