title: [Clinical study of esophageal achalasia, with special reference to the radiographic observation of the lesion and the therapeutic methods].
mesh_terms: D000328:Adult; D000368:Aged; D004931:Esophageal Achalasia / Q000000981:diagnostic imaging* / Q000601:surgery; D004947:Esophagus / Q000000981:diagnostic imaging; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D011859:Radiography