Table 2

Characteristic of serrated polyps according to histological subtype

Hyperplastic polypsSessile serrated adenomas/polypsTraditional 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 flexure1520 (23.5%)1330 (55.4%)26 (55%)
 ▸ Descending colon902 (14%)446 (18.6%)10 (21.2%)
 ▸ Rectosigmoid4036 (62.5%)622 (25.9%)11 (23.8%)
Cytological dysplasia, n (%)
 ▸ Any dysplasia469 (19.5%)15 (31.5%)
 ▸ Low-grade dysplasia438 (18.2%)12 (25.5%)
 ▸ High-grade dysplasia31 (1.4%)3 (6.4%)