Duplication of the inferior vena cava and its role in recurrent pulmonary emboli.
D000368:Aged; D006801:Humans; D008297:Male; D011655:Pulmonary Embolism / Q000209:etiology* / Q000601:surgery; D011859:Radiography; D013923:Thromboembolism / Q000209:etiology; D014682:Vena Cava, Inferior / Q000002:abnormalities* / Q000000981:diagnostic imaging / Q000601:surgery