Different definitions of Barrett’s oesophagus
| Society | Length of CE | Intestinal metaplasia | GOJ |
| AGA | Any length | Required | PEGF |
| BSG | ≥1 cm | Not required | PEGF |
| JES | Any length | Not required | DEPV |
| APAGE | ≥1 cm | Not required | PEGF |
| ACG | ≥1 cm | Required | PEGF |
| ESGE | ≥1 cm | Required | PEGF |
ACG, American College of Gastroenterology; AGA, American Gastroenterological Association; APAGE, Asian Pacific Association of Gastroenterology; BSG, British Society of Gastroenterology; CE, Columnar epithelium; DEPV, distal end of palisade vessels; ESGE, European Society of Gastrointestinal Endoscopy.; GOJ, Gastrooesophageal Junction; JES, Japan Esophageal Society; PEGF, proximal end of gastric folds.