<prompt> Following are features of Barrett;s oesophagusIntestinal MetaplasiaAlways gastric type of epitheliumSquamous carcinoma more commonPresent as patchy or ring involvement  <response>: Histologic changes of the distal oesophagal mucosa from its normal squamous epithelium to a columnar configuration intestinal metaplasia. Barrett oesophagus in endoscopy appears as velvety-red tongues of mucosa that extend cephalad from the GEJ. These patients carry a higher risk to Adenocarcinoma oesophagus compared to normal population. Reference: Sabiston 20th edition page: 1074 