<prompt> 60 yr old male presented with dysphagia. The mucosal biopsy is provided here which shows?Squamous metaplasiaColumnar metaplasiaAnaplasiaConnective tissue metaplasia  <response>: Goblet cells are seen in the columnar epithelium, identified by distinct mucous vacuoles that stain pale blue by hematoxylin and eosinBarrett;s oesophagus is characterized by the replacement of the normal stratified squamous epithelium lining of the esophagus by simple columnar epithelium with goblet cells intestinal metaplasia.Robbins 9th edition pg: 757 