Superior vena cava syndrome.
D003095:Collagen Diseases / Q000150:complications; D006801:Humans; D008297:Male; D008477:Mediastinal Diseases / Q000150:complications*; D008875:Middle Aged; D010690:Phlebography; D014652:Vascular Diseases / Q000150:complications*; D014683:Vena Cava, Superior