Number, size and macroscopic type of lesion
| No | Average size (mm (range)) | Macroscopic type | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Whole lesion | Area of SA | Sessile | Protuberant | ||||||
| AHP | 5 | 5.2 (3–7) | – | 3 | 2 | ||||
| SA | 11 | 11.8 (7–24) | 11.8 (7–24) | 0 | 11 | ||||
| SA+HP | 3 | 8.7 (8–10) | 6.0 (5–7) | 2 | 1 | ||||
| SA+AHP | 6 | 12.0 (6–18) | 8.0 (3–17) | 2 | 4 | ||||
AHP, atypical hyperplastic polyp; SA, lesion composed purely of serrated adenoma; SA+HP, serrated adenoma accompanied by a hyperplastic polyp; SA+AHP, serrated adenoma accompanied by an atypical hyperplastic polyp.