Table 4. BRAF and K-ras mutation in different subtypes of serrated polyps.
BRAF mutation (%) |
K-ras mutation (%) |
|||
---|---|---|---|---|
Proximal | Distal | Proximal | Distal | |
MVHP | 4/10 (40) | 10/18 (55.5) | 0 | 0 |
GCHP | 0 | 0 | 2/19 (10.5) | 3/21 (14.2) |
SSA/P | 10/14 (71.4) | 6/9 (66.6) | 0 | 0 |
SSA/P/DIS | 3/3 (100) | 2/2 (100) | 0 | 0 |
TSA | 0 | 0 | 1/2 (50) | 3/4 (75) |
GCHP, goblet cells hyperplastic polyp; MVHP, microvescicular hyperplastic polyp; SSA/P/DIS, sessile serrated adenoma with cytological dysplasia/polyp; TSA, traditional serrated adenoma.