Barrett's oesophagus.
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001471:Barrett Esophagus / Q000150:complications*; D003110:Colonic Neoplasms / Q000150:complications*; D003111:Colonic Polyps / Q000150:complications; D004935:Esophageal Diseases / Q000150:complications*; D006801:Humans; D008875:Middle Aged