Barrett's esophagus is
Barrett's esophagus is specialized columnar metaplasia that replaces the normal squamous mucosa of the distal esophagus in some persons with GERD. Barrett's epithelium is a major risk factor for adenocarcinoma of the esophagus and is readily detected endoscopically, due to proximal displacement of the squamocolumnar junction.Ref: Harrison; 19th edition; Page no: 1895
Lower esophagus lined by columnar epithelium
Upper esophagus lined by columnar epithelium
Lower esophagus lined by ciliated epithelium
Lower esophagus lined by pseudo stratified epithelium
C.V.S