Columnar epithelium in the esophagus.
D001471:Barrett Esophagus / Q000209:etiology / Q000473:pathology*; D004848:Epithelium / Q000473:pathology; D004935:Esophageal Diseases / Q000473:pathology*; D005764:Gastroesophageal Reflux / Q000150:complications; D006801:Humans; D009092:Mucous Membrane / Q000473:pathology