Table 1.
Clinical characteristics of 316 colorectal cancer patients
| Parameters | Total patients (n, %) |
|---|---|
| Patient characteristics | |
| Median age (years) | 59(23-91) |
| Age, years | |
| ≤60 | 166(52.5) |
| >60 | 150(47.5) |
| Sex | |
| Male | 196(62.0) |
| Female | 120(38.0) |
| Primary tumor location | |
| Right side of the colon | 77(24.4) |
| Left side of the colon | 133(42.1) |
| Rectum | 106(33.5) |
| Primary tumor differentiation | |
| Well/Moderate | 262(82.9) |
| Poor | 54(17.1) |
| Primary tumor diameter (cm) | |
| Median (range) | 4.5(1.0-21.0) |
| ≤5 | 216(68.4) |
| >5 | 100(31.6) |
| Number of harvested lymph nodes | |
| Median (range) | 14(0-55) |
| <12 | 129(40.8) |
| ≥12 | 187(59.2) |
| Number of metastatic lymph nodes (median, range) | 1(0-19) |
| T stage | |
| 1 | 8(2.5) |
| 2 | 54(17.1) |
| 3 | 93(29.4) |
| 4 | 161(50.9) |
| N stage | |
| 0 | 146(46.2) |
| 1 | 119(37.7) |
| 2 | 51(16.1) |
| TNM stage | |
| II | 102(32.2) |
| III | 60(19.0) |
| IV | 154(48.7) |
| Preoperative CEA (ng/ml) | |
| ≤5 | 141(44.6) |
| >5 | 175(55.4) |
| Preoperative CA19-9 (U/ml) | |
| ≤35 | 227(71.8) |
| >35 | 89(28.2) |
| Adjuvant chemotherapy | |
| Yes | 220(69.6) |
| No | 96(30.4) |
Abbreviations: CEA: carcinoembryonic antigen, CA19-9: carbohydrate antigen 19-9