<prompt> All except one are true regarding BarretsoesophagusMore incidence of sq. cell caMetaplasiaColumnar epitheliumInvolves lower oesophagus  <response>: Ans is a ie More incidence of sq. cell ca There is increased incidence of adenocarcinoma in Barrets esophagus.Barretts esophagus is a premalignant condition with increased incidence of adenocarcinoma of esophagus. The risk of adenocarcinoma increases with increasing length of columnar-lined epitheliumAlso rememberBarretts esophagus is the single most impoant risk factor for adenocarcinoma of esophagus.The adenocarcinoma develops at the squamo-columnar junction -85 or within 2 cm iof the junction. 