50 year old male with Gastroesophageal reflux disease- Diagnosis?
Squamous metaplasia
Columnar metaplasia
Dysplasia
Malignancy
Ans. (b) Columnar metaplasia Histological findings of barrett esophagusMetaplastic columnar epithelium (specialized) with goblet cells is seen adjacent to squamous epithelium of esophagus hence suggestive of columnar metaplasiaLong-segment: Barrett's mucosa extends 3 cm or more. Short-segment: Barrett's mucosa extends less than 3 cm
G.I.T.