Motor disorders of the esophagus.
D003680:Deglutition Disorders / Q000175:diagnosis*; D004931:Esophageal Achalasia / Q000175:diagnosis* / Q000628:therapy; D004935:Esophageal Diseases / Q000503:physiopathology / Q000628:therapy; D004945:Esophagoscopy; D004947:Esophagus / Q000502:physiology / Q000503:physiopathology; D006801:Humans; D008365:Manometry