The Greenfield intracaval filter as a source of recurrent pulmonary thromboembolism.
D000368:Aged; D005374:Filtration / Q000295:instrumentation*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011655:Pulmonary Embolism / Q000209:etiology* / Q000517:prevention & control; D012008:Recurrence; D014682:Vena Cava, Inferior