title: Access to the central circulation in the presence of combined superior and inferior vena caval obstruction.
mesh_terms: D002404:Catheterization / Q000379:methods*; D003251:Constriction, Pathologic; D006801:Humans; D011859:Radiography; D014652:Vascular Diseases / Q000000981:diagnostic imaging; D014682:Vena Cava, Inferior / Q000000981:diagnostic imaging*; D014683:Vena Cava, Superior / Q000000981:diagnostic imaging*