title: Multinodular goiter with substernal component causing superior vena cava obstruction.
mesh_terms: D006044:Goiter, Nodular / Q000150:complications*; D006045:Goiter, Substernal / Q000150:complications*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011859:Radiography; D014683:Vena Cava, Superior / Q000000981:diagnostic imaging; D014689:Venous Insufficiency / Q000000981:diagnostic imaging / Q000209:etiology*