[Case of vena cava superior syndrome caused by lung cancer accompanied by hyponatremia].
D000368:Aged; D005260:Female; D006801:Humans; D007010:Hyponatremia / Q000150:complications*; D008175:Lung Neoplasms / Q000150:complications*; D014652:Vascular Diseases / Q000209:etiology; D014683:Vena Cava, Superior