<prompt> Barrets esophagus is diagnosed by:Squamous metaplasiaIntestinal metaplasiaSquamous dysplasiaIntestinal dysplasia  <response>: Answer is B Intestinal Metaplasia Barrets esophagus is a metaplasia of the esophageal mucosa caused by replacement of squamous epithelium with columnar epithelium. Specialized intestinal epitheliutn intestinal metaplasia is the most common and most impoant type of columnar epithelium seen in Barrets esophagus. 