TABLE 1. Clinicopathological variables of samples.
| Variables | n (%) | |
| Age | > 50 | 64 (90.3) |
| ≤ 50 | 7 (9.7) | |
| Gender | Male | 45 (64.3) |
| Female | 25 (35.7) | |
| Tumor location | Distal | 26 (36.1) |
| Proximal | 46 (63.9) | |
| Tumor size | > 5 cm | 39 (54.9) |
| ≤ 5 cm | 32 (45.1) | |
| Margin compromised | absent | 63 (90) |
| present | 7 (10) | |
| Venous invasion | absent | 46 (66.7) |
| present | 23 (33.3) | |
| Lymphatic invasion | absent | 30 (43.5) |
| present | 39 (56.5) | |
| Perineural invasion | absent | 26 (37.7) |
| present | 43 (62.3) | |
| Differentiation grade | well/moderate | 38 (55.9) |
| little/undifferentiated | 30 (44.1) | |
| T stage | 0 | 1 (1.4) |
| 1 | 2 (4.2) | |
| 2 | 17 (23.6) | |
| 3 | 41 (56.9) | |
| 4 | 10 (13.9) | |
| N stage | 0 | 24 (34.7) |
| 1/2/3 | 46 (65.3) | |
| Lauren classification | Intestinal | 49 (69.4) |
| diffuse | 21 (30.6) | |
| N | ||
| 0 | 24 (34,7) | |
| 1/2/3 | 46 (65,3) | |
| Lauren classification | ||
| Intestinal | 49 (69,4) | |
| diffuse | 21 (30,6) | |
n=sample number