Barrett's esophagus is an acquired metaplastic abnormality in which the normal stratified squamous epithelium lining of the esophagus is replaced by an intestinal-like columnar epithelium.

Esophagectomy is an operation that involves removing the part of the esophagus that is associated with a tumor and a "margin" of normal esophagus. Usually, the esophagus is replaced by building a new ...