_:b671637 . "CDISC"^^ . "SOFT TISSUE OSTEOSARCOMASYCDISC" . . "Extraosseous OsteosarcomaSYNCI" . _:b671638 . _:b671639 . _:b671639 . _:b671637 . _:b632546 . "Extraskeletal_Osteosarcoma"^^ . _:b671640 . "Soft Tissue OsteosarcomaSYNCI" . "A malignant mesenchymal tumor of soft tissue composed of neoplastic cells that recapitulate the phenotype of osteoblasts and that synthesize bone.NCI" . "C8810"^^ . "Extraskeletal Osteosarcoma"^^ . _:b733152 . _:b760807 . _:b632546 . _:b733152 _:b760804 . _:b760806 _:b671639 . _:b671640 . _:b632546 _:b736505 . _:b671638 . . "An osteosarcoma arising from the soft tissues.NCI" . _:b671637 . _:b760807 _:b671640 . _:b760804 _:b671637 . _:b731401 . _:b760805 _:b671638 . . "Malignant"^^ . _:b731401 _:b733152 . "Neoplastic Process"^^ . "Extraskeletal Osteogenic SarcomaSYNCI" . _:b760804 _:b760805 . "C0855052"^^ . "EXTRAOSSEOUS OSTEOSARCOMASYCDISC" . _:b671640 . "Extraskeletal Osteosarcoma"^^ . _:b736505 . _:b760805 _:b760806 . _:b736505 _:b731401 . "EXTRASKELETAL OSTEOGENIC SARCOMASYCDISC" . "Extraskeletal OsteosarcomaPTNCI" . _:b760806 _:b760807 . _:b671638 . . "OSTEOSARCOMA, EXTRASKELETAL, MALIGNANTPTCDISC" . _:b671639 . . "A malignant bone-forming neoplasm, arising in tissue other than bone.CDISC" .