system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Characteristic of Barrett's esophagus is?
assistant
The correct answer is  Ans. is 'b' i.e. Columnar metaplasia * Barrett's esophagus is a metaplasia in which normal squamous epithelium of lower part of esophagus is replaced by columnar epithelium due to prolonged esophageal reflux.* Most common type of metaplasia in Barrett's esophagus is intestinal metaplasia which is characterized by presence of intestinal goblet cells in the metaplastic columnar epithelium.* Barrett's esophagus is a pre-malignant condition. It is the single most important risk factor for adenocarcinoma of esophagus.