A small nodule in the upper third of the esophagus is displayed at 11 ó clock. Peculiar image that shows the differences between two epithelium at the middle third is red(columnar from the stomach) and the upper third is pink (stratified) from the esophagus. Barrett’s esophagus, which is the replacement of the normal squamous epithelium of the distal esophagus with metaplastic columnar epithelium
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