Intestinal Obstruction — Practice

A 50-year-old male with long-standing GERD undergoes upper GI endoscopy showing replacement of the normal squamous epithelium of the distal oesophagus with columnar (intestinal metaplasia) epithelium extending 3 cm above the gastro-oesophageal junction. Biopsy confirms specialised intestinal metaplasia with no dysplasia. This condition is best termed: