_:vb50955730 "A vascular cancer that is located_in the aorta."^^ . _:vb50955730 . _:vb50955730 . _:vb50955730 . _:vb50955730 . _:vb50955730 "url:https://www.ncbi.nlm.nih.gov/pubmed/14681654"^^ . _:vb50955730 .