title: Roentgenogram of the month. Right paratracheal shadow in an asymptomatic young man.
mesh_terms: D000328:Adult; D001401:Azygos Vein / Q000002:abnormalities / Q000000981:diagnostic imaging*; D003937:Diagnosis, Differential; D004108:Dilatation, Pathologic; D006801:Humans; D008297:Male; D011859:Radiography; D014682:Vena Cava, Inferior / Q000002:abnormalities / Q000000981:diagnostic imaging