title: Radiological case of the month. Achalasia.
mesh_terms: D014355:Chagas Disease / Q000000981:diagnostic imaging; D002648:Child; D003937:Diagnosis, Differential; D004931:Esophageal Achalasia / Q000000981:diagnostic imaging*; D004938:Esophageal Neoplasms / Q000000981:diagnostic imaging; D004940:Esophageal Stenosis / Q000000981:diagnostic imaging; D006801:Humans; D008297:Male; D011859:Radiography