Table 1.
Patient demographics and clinicopathologic features
| Variables | Patients (N=735) |
|---|---|
| Gender | |
| Male | 446 (60.7%) |
| Female | 289 (39.3%) |
| Age, median (Range) | 66 (27 to 90) |
| <65 | 332 (45.2%) |
| ≥65 | 403 (54.8%) |
| Clinical stage | |
| II | 428 (58.2%) |
| III | 307 (41.8%) |
| T stage | |
| T1+T2 | 19 (2.6%) |
| T3 | 163 (22.2%) |
| T4 | 553 (75.2%) |
| N stage | |
| N0 | 428 (58.2%) |
| N1 | 176 (23.9%) |
| N2 | 131 (17.9%) |
| Tumor location | |
| Right colon | 235 (32.0%) |
| Left colon | 226 (30.7%) |
| Rectum | 274 (37.3%) |
| Pathological type | |
| Adenocarcinoma | 689 (93.7%) |
| Mucinous Adenocarcinoma | 42 (5.7%) |
| Signet ring cell carcinoma | 4 (0.6%) |
| Degree of differentiation | |
| Moderate and well | 435 (59.2%) |
| Poor | 300 (40.8%) |
| Lymphatic invasion | |
| Yes | 439 (59.7%) |
| No | 296 (40.3%) |
| Vascular invasion | |
| Yes | 102 (13.9%) |
| No | 633 (86.1%) |
| Perineural invasion | |
| Yes | 700 (95.2%) |
| No | 35 (4.8%) |
| Metastasis and recurrence | |
| Yes | 222 (30.2%) |
| No | 513 (69.8%) |
| Survival status | |
| Alive | 500 (68.0%) |
| Dead | 235 (32.0%) |