[Differentiation of abnormal x-ray images in the mediastinum, with special reference to the cardiac aorta].
D001014:Aortic Aneurysm / Q000175:diagnosis*; D003937:Diagnosis, Differential; D006801:Humans; D008479:Mediastinal Neoplasms / Q000175:diagnosis*; D013902:Radiography, Thoracic