title: Primary surgical treatment for esophageal achalasia.
mesh_terms: D004106:Dilatation; D004931:Esophageal Achalasia / Q000601:surgery* / Q000628:therapy; D004945:Esophagoscopy; D004947:Esophagus / Q000601:surgery*; D006801:Humans; D007415:Intestinal Obstruction / Q000209:etiology; D008722:Methods