Barrett's esophagus is
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
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
C.V.S