title: Roentgenogram of the month. Superior mediastinal mass in a neonate.
mesh_terms: D004373:Ductus Arteriosus / Q000000981:diagnostic imaging*; D005260:Female; D006322:Heart Aneurysm / Q000000981:diagnostic imaging*; D006801:Humans; D007231:Infant, Newborn; D011859:Radiography