<prompt> Barrettes oesophagus is diagnosed bySquamous metaplasiaIntestinal metaplasiaSquamous dysplasiaIntestinal dysplasia  <response>: B Intestinal metaplasia Barretts esophagus is a serious complication of GERD. In Barretts esophagus, normal tissue lining the esophagus changes to tissue that resembles the lining of the intestinecolumnar epithelium. Barretts esophagus is marked by the presence of columnar epithelia in the lower esophagus, replacing the normal squamous cell epithelium--an example of metaplasia. 