Table 4.
Most advanced finding at all follow up colonoscopies
| Risk group | Normal | Metaplastic polyp | Simple adenoma | Multiple adenoma | High risk adenoma | Cancer | Total |
|---|---|---|---|---|---|---|---|
| 2 (2 FDR) | 12 (92.3) | 1 (7.7) | 0 | 0 | 0 | 0 | 13 (100) |
| 3a (3 FDR) | 36 (81.8) | 3 (6.8) | 4 (9.1) | 0 | 1 (2.3) | 0 | 44 (100) |
| 3b (Amsterdam-) | 28 (73.7) | 4 (10.5) | 3 (7.9) | 1 (2.6) | 2 (5.3) | 0 | 38 (100) |
| 3c (HCRC) | 205 (78.5) | 15 (5.7) | 28 (10.7) | 3 (1.1) | 9 (3.4) | 1 (0.4) | 261 (100) |
| Total | 281 (78.9) | 23 (6.5) | 35 (9.8) | 4 (1.1) | 12 (3.4) | 1 (0.3) | 356a (100) |
Values are number (%) of examinations
aThree examinations were excluded due to missing data on finding