Characteristic of serrated polyps according to histological subtype
| Hyperplastic polyps | Sessile serrated adenomas/polyps | Traditional serrated adenomas | |
|---|---|---|---|
| Total number, n (%) | 6458 (72.5%) | 2398 (27%) | 47 (0.5%) |
| Size ≥10 mm, n (%) | 359 (5.4%) | 647 (28.7%) | 27 (57.4%) |
| Location, n (%) | |||
| ▸ Proximal to splenic flexure | 1520 (23.5%) | 1330 (55.4%) | 26 (55%) |
| ▸ Descending colon | 902 (14%) | 446 (18.6%) | 10 (21.2%) |
| ▸ Rectosigmoid | 4036 (62.5%) | 622 (25.9%) | 11 (23.8%) |
| Cytological dysplasia, n (%) | |||
| ▸ Any dysplasia | 469 (19.5%) | 15 (31.5%) | |
| ▸ Low-grade dysplasia | 438 (18.2%) | 12 (25.5%) | |
| ▸ High-grade dysplasia | 31 (1.4%) | 3 (6.4%) | |