This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Misc., Subject name: Pathology
Barrette's oesophagus is diagnosed by 
Select and explain. 
A. Squamous metaplasia, B. Intestinal metaplasia, C. Squamous dysplasia, D. Intestinal dysplasia
B: Intestinal metaplasia
Answer: B: Intestinal metaplasia 
Explanation: (B) Intestinal metaplasia # Barrett's esophagus is a serious complication of GERD.> In Barrett's esophagus, normal tissue lining the esophagus changes to tissue that resembles the lining of the intestine(columnar epithelium).> Barrett's esophagus is marked by the presence of columnar epithelia in the lower esophagus, replacing the normal squamous cell epithelium--an example of metaplasia.