Barrets esophagus involves most commonly which pa of esophagus
BARRETT'S OESOPHAGUS * It is the metaplastic changes in the mucosa of the oesophagus as the result of GERD. * Squamous epithelium of lower end of the oesophagus is replaced by diseased columnar epithelium (columnar metaplasia). * There is a macroscopically visible length of columnar mucosa with microscopic features of intestinal metaplasia. * It affects lower oesophagus commonly often middle oesophagus also. Ref: SRB&;s manual of surgery,3 rd ed , pg no 728
Upper 1\/3rd
lower 1\/3rd
Middle 1\/3rd
Diffuse
G.I.T