title: Achalasia of the esophagus.
mesh_terms: D000818:Animals; D004106:Dilatation; D004931:Esophageal Achalasia / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000209:etiology / Q000266:history / Q000473:pathology / Q000601:surgery; D004943:Esophagogastric Junction / Q000502:physiology; D004947:Esophagus / Q000294:innervation / Q000503:physiopathology / Q000601:surgery; D006801:Humans; D008365:Manometry; D009197:Myenteric Plexus / Q000473:pathology; D011183:Postoperative Complications; D011859:Radiography