Achalasia simulating mediastinal tumor.
D000368:Aged; D002277:Carcinoma / Q000000981:diagnostic imaging; D003937:Diagnosis, Differential; D004931:Esophageal Achalasia / Q000000981:diagnostic imaging*; D006801:Humans; D008297:Male; D008479:Mediastinal Neoplasms / Q000000981:diagnostic imaging*; D011859:Radiography