title: Inferior vena caval defects and the venous circulation.
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D011655:Pulmonary Embolism / Q000000981:diagnostic imaging / Q000209:etiology*; D011859:Radiography; D012008:Recurrence; D014682:Vena Cava, Inferior / Q000002:abnormalities* / Q000000981:diagnostic imaging