BCS is a good mnemonic for Barrett's dysplasia.

Barrett's Columnar replaces Squamous in Barrett’s oesophagus. This is also known as small intestinal (columnar) metaplasia. There is increased risk of oesophageal adenocarcinoma.

Nitrates, caffeine and alcohol can help relieve symptoms by relaxing lower oesophageal tone. Not all patients with GORD should undergo an OGD (should be considered if GI bleeding or symptoms of dysphagia occur). Oesophagitis is present in half of GORD patients. Oesophageal manometry or oesophageal motility study measures the strength of the lower oesophageal sphincter. This would rule out achalasia.