Table 1.
Clinical characteristics of 211 patients with sporadic colorectal cancer n (%)
| Variables | Value |
| No. of patients | 211 (100) |
| Median age (yr, range) | 63 (33-95) |
| Age (yr) | |
| ≤ 50 | 30 (14.2) |
| > 50 | 181 (85.8) |
| Sex | |
| Female | 105 (49.8) |
| Male | 106 (50.2) |
| Site | |
| Right-sided | 43 (20.8) |
| Left-sided | 73 (34.6) |
| Rectum | 91 (43.1) |
| Synchronous lesions | 4 (1.9) |
| Stage | |
| I | 32 (15.2) |
| II | 65 (30.8) |
| III | 85 (40.3) |
| IV | 29 (13.7) |
| Bowel wall invasion | |
| pT1 | 4 (1.9) |
| pT2 | 44 (20.8) |
| pT3 | 146 (69.2) |
| pT4 | 17 (8.1) |
| Lymph node metastasis | |
| pN0 | 105 (49.8) |
| pN1 | 60 (28.4) |
| pN2 | 46 (21.8) |
| Distant metastasis | |
| No | 182 (86.3) |
| Yes | 29 (13.7) |
| Invasion | |
| NO | 118 (55.9) |
| LVI | 47 (22.3) |
| PNI | 15 (7.1) |
| Both LVI/PNI | 31 (14.7) |
| Differentiation | |
| Well | 32 (15.2) |
| Moderately | 171 (81) |
| Poorly | 8 (3.8) |
pT: Pathological tumor stage; pN: Pathological nodal stage; ALI: Angiolymphatic invasion; PNI: Perineural invasion.