Observations on dysphagia.
D000230:Adenocarcinoma / Q000601:surgery; D003680:Deglutition Disorders / Q000175:diagnosis / Q000209:etiology*; D003937:Diagnosis, Differential; D004931:Esophageal Achalasia / Q000175:diagnosis / Q000000981:diagnostic imaging; D004935:Esophageal Diseases / Q000000981:diagnostic imaging; D004938:Esophageal Neoplasms / Q000175:diagnosis / Q000601:surgery; D004940:Esophageal Stenosis / Q000175:diagnosis; D004941:Esophagitis / Q000175:diagnosis; D004942:Esophagitis, Peptic / Q000000981:diagnostic imaging; D005402:Fistula / Q000000981:diagnostic imaging / Q000601:surgery; D005764:Gastroesophageal Reflux / Q000175:diagnosis; D006548:Hernia, Diaphragmatic / Q000601:surgery; D006801:Humans; D010608:Pharyngeal Diseases / Q000601:surgery; D010614:Pharynx / Q000000981:diagnostic imaging; D011859:Radiography; D013035:Spasm