Overall histological yield of HD-WLE and NBI
| HD-WLE diagnosis (n) | |||||
| No IM | IM | LGD | HGD | OAC | |
| NBI diagnosis (n) | |||||
| No IM | 10 | 6 | 3 | 0 | 0 |
| IM | 8 | 44 | 11 | 1 | 0 |
| LGD | 0 | 18 | 9 | 1 | 0 |
| HGD | 1 | 1 | 3 | 4 | 0 |
| OAC | 0 | 0 | 0 | 2 | 1 |
OAC, oesophageal adenocarcinoma; HD-WLE, high-definition white light endoscopy; HGD, high-grade dysplasia; IM, intestinal metaplasia; LGD, low-grade dysplasia; NBI, narrow band imaging.