Table 2.
The clinical and pathological features of serrated and non-serrated adenocarcinomas
| Serrated adenocarcinomas (n = 42) | Non-serrated adenocarcinomas (n = 59) | P-value (χ2-test) | |
|---|---|---|---|
| Mean age in years (range) | 67.5 (43–85) | 68.5 (38–88) | |
| Gender, N (%) | |||
| Male | 17 (40.5) | 23 (39.0) | 0.880 |
| Female | 25 (59.5) | 36 (61.0) | |
| Location, N (%) | |||
| Proximal colon | 24 (57.1) | 20 (33.9) | 0.050 |
| Distal colon | 6 (14.3) | 9 (15.3) | |
| Rectum/rectosigmoid colon | 12 (28.6) | 30 (50.8) | |
| Grade, N (%) | |||
| I | 14 (33.3) | 11 (18.6) | 0.085 |
| II | 20 (47.6) | 41 (69.5) | |
| III | 8 (19.0) | 7 (11.9) | |
| Dukes' stage, N (%) | |||
| A | 6 (14.3) | 13 (22.0) | 0.699 |
| B | 20 (47.6) | 23 (39.0) | |
| C | 10 (23.8) | 16 (27.1) | |
| D | 6 (14.3) | 7 (11.9) | |
| Mucinous, N (%) | |||
| No | 26 (61.9) | 54 (91.5) | <0.001 |
| Yes | 16 (38.1) | 5 (8.5) | |
| MSI | |||
| MSI-H | 7 (18.9) | 4 (7.1) | 0.164 |
| MSS/MSI-L | 30 (81.1) | 52 (92.9) | |
MSI, Microsatellite instability; MSI-H, high-level MSI; MSI-L, low-level MSI.