Esophageal hiatal hernia.
D005764:Gastroesophageal Reflux / Q000175:diagnosis; D006548:Hernia, Diaphragmatic / Q000150:complications / Q000175:diagnosis / Q000453:epidemiology / Q000209:etiology / Q000601:surgery / Q000628:therapy; D006801:Humans; D008365:Manometry; D008722:Methods; D011187:Posture; D012008:Recurrence