X-ray films of the month.
D000328:Adult; D001011:Aorta / Q000002:abnormalities*; D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D008479:Mediastinal Neoplasms / Q000000981:diagnostic imaging; D008482:Mediastinum / Q000000981:diagnostic imaging*; D011859:Radiography