The columnar-lined (Barrett's) esophagus.
D004848:Epithelium / Q000473:pathology; D004940:Esophageal Stenosis / Q000150:complications / Q000473:pathology; D004942:Esophagitis, Peptic / Q000150:complications* / Q000209:etiology / Q000473:pathology; D004947:Esophagus / Q000473:pathology; D005764:Gastroesophageal Reflux / Q000150:complications / Q000473:pathology; D006548:Hernia, Diaphragmatic / Q000150:complications*; D006801:Humans; D013577:Syndrome