title: Idiopathic dilatation of the superior vena cava.
mesh_terms: D002648:Child; D004108:Dilatation, Pathologic; D006801:Humans; D008297:Male; D011859:Radiography; D014652:Vascular Diseases / Q000000981:diagnostic imaging; D014683:Vena Cava, Superior / Q000000981:diagnostic imaging