. _:vb50955729 . "disease_ontology"^^ . . _:vb50955729 . "aortic malignant neoplasm"@en . . "aortic malignant tumor"^^ . "UMLS_CUI:C1334560"^^ . "NCI:C5375"^^ . "DOID:8352"^^ . _:vb50955729 . . . _:vb50955729 . "A vascular cancer that is located_in the aorta."^^ . _:vb50955729 .