Table 1.
Clinical characteristics of 952 patients undergoing complete resection for CLM
| Total N=952 | |
|---|---|
| Gender | |
| Male | 544 (57.1) |
| Female | 408 (42.9) |
| Age | |
| Median (range) | 62.5 (23-89) |
| Mean ± SD | 61.1 ± 12 |
| Simultaneous diagnosis | |
| No | 827 (86.9) |
| Yes | 125 (13.1) |
| Disease-free interval < 12 months | |
| No | 507 (53.3) |
| Yes | 445 (46.7) |
| Disease-free interval [months] | |
| Median (range) | (13 (0-307) |
| Mean ± SD | 18.6 ± 24 |
| PRIMARY TUMOR | |
| Primary | |
| Colon | 689 (72.4) |
| Rectum | 263 (27.6) |
| T (n=887) | |
| 1 | 28 (3.2) |
| 2 | 119 (13.4) |
| 3 | 693 (78.1) |
| 4 | 47 (5.3) |
| Differentiation (n=848) | |
| Well | 25 (2.9) |
| Moderately | 740 (87.3) |
| Poorly | 83 (9.8) |
| LVI (n=643) | |
| No | 396 (61.6) |
| Yes | 247 (38.4) |
| PNI (n=556) | |
| No | 444 (79.9) |
| Yes | 112 (20.1) |
| Lymph node status | |
| Negative | 371 (39.0) |
| Positive | 581 (61.0) |
| Total number of lymph nodes resected (n=809) | |
| Median (range) | 11 (0-62) |
| Mean ± SD | 13 ± 9.2 |
| Total positive number (n=883) | |
| Median (range) | 1 (0-38) |
| Mean ± SD | 2.19 ± 3.3 |
CLM=colorectal liver metastases, SD=standard deviation, LVI=lymphovascular invasion, PNI=perineural invasion.