title: Superior vena caval obstruction with substernal thyroid.
mesh_terms: D005260:Female; D006044:Goiter, Nodular / Q000150:complications* / Q000000981:diagnostic imaging; D006801:Humans; D008477:Mediastinal Diseases / Q000000981:diagnostic imaging / Q000209:etiology; D008875:Middle Aged; D011859:Radiography; D014652:Vascular Diseases / Q000000981:diagnostic imaging / Q000209:etiology; D014683:Vena Cava, Superior / Q000000981:diagnostic imaging*