| Colonic segment | Adenomas | Hyperplastic polyps | Other polyps | |||
| WL | NBI | WL | NBI | WL | NBI | |
| Caecum | 2 | 2 (2) | 3 (2) | 5 (2) | 1 (1) | 3 (1) |
| Ascending colon | 5 | 7 (1) | 5 (2) | 3 | 1 (1) | 2 |
| Hepatic flexure | 6 (1) | 2 (2) | 4 | 1 (1) | 2 (1) | 0 |
| Transverse colon | 5 | 3 (2) | 3 (1) | 4 (1) | 3 | 2 (1) |
| Splenic flexure | 6 (2) | 2 (1) | 6 (2) | 3 (3) | 3 | 3 |
| Descending colon | 1 | 5 (1) | 2 | 4 (2) | 0 | 1 |
| Total proximal colon | 25 (3) | 21 (9) | 23 (7) | 20 (9) | 10 (3) | 11 (2) |
| Sigmoid colon | 6 | – | 4 | – | 0 | – |
| Rectum | 2 | – | 2 (1) | – | 0 | – |
| Total distal colorectum | 8 (0) | – | 6 (1) | – | 0 | – |
| Total whole colorectum | 33 (3) | – | 29 (8) | – | 10 (3) | – |
NBI, narrow band imaging; WL, high definition (HDTV) white light examination
Values in parentheses refer to the number of lesions detected in each segment which had a flat (Japanese Research Society for Cancer type II) morphology.