Esophageal diameter and the treatment of achalasia.
D004106:Dilatation; D004931:Esophageal Achalasia / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000601:surgery / Q000628:therapy*; D004947:Esophagus / Q000033:anatomy & histology*; D006801:Humans; D008722:Methods; D009132:Muscles / Q000601:surgery; D011859:Radiography