title: Evaluation of the obstructed esophagus.
mesh_terms: D003680:Deglutition Disorders / Q000209:etiology*; D004935:Esophageal Diseases / Q000000981:diagnostic imaging*; D004938:Esophageal Neoplasms / Q000000981:diagnostic imaging; D004945:Esophagoscopy; D006801:Humans; D011859:Radiography