Barrett's vs congenitally short esophagus.
D003680:Deglutition Disorders / Q000209:etiology; D003937:Diagnosis, Differential; D004940:Esophageal Stenosis / Q000175:diagnosis*; D004947:Esophagus / Q000002:abnormalities* / Q000000981:diagnostic imaging / Q000601:surgery; D005764:Gastroesophageal Reflux / Q000150:complications; D006801:Humans; D011859:Radiography