title: Obstructions of the vena cava.
mesh_terms: D001807:Blood Vessel Prosthesis; D002283:Carcinoma, Bronchogenic / Q000150:complications; D006801:Humans; D008175:Lung Neoplasms / Q000150:complications; D013927:Thrombosis / Q000150:complications; D014652:Vascular Diseases / Q000175:diagnosis / Q000209:etiology / Q000601:surgery / Q000628:therapy; D014682:Vena Cava, Inferior; D014683:Vena Cava, Superior; D014684:Venae Cavae