Table 3.
Results of the univariable Cox regression analysis for overall survival. CEA: carcinoembryogenic antigen, PVE: portal vein embolization.
| Factor | Hazard Ratio (95% Confidence Interval) | p Value |
|---|---|---|
| Age | 1.021 (0.969, 1.056) | 0.591 |
| Laterality of the primary colorectal cancer (right-sided vs. left-sided) | 0.954 (0.269, 3.388) | 0.942 |
| Location of the primary tumor (colon vs. rectal cancer) | 1.378 (0.621, 3.056) | 0.430 |
| Time interval between diagnosis of the primary colorectal cancer and detection of hepatic metastases (synchronous vs. metachronous) | 4.712 (0.628, 35.331) | 0.132 |
| Size of the largest metastasis at baseline | 1.138 (0.959, 1.351) | 0.139 |
| Number of metastases at baseline | 0.998 (0.869, 1.145) | 0.927 |
| Presence or absence of metastases in the FLR | 0.639 (0.290, 1.408) | 0.267 |
| Preoperative serum CEA levels | 1.000 (0.999, 1.001) | 0.972 |
| Time between PVE and right hemihepatectomy | 0.993 (0.977, 1.010) | 0.427 |
| Neoadjuvant chemotherapy treatment | 0.813 (0.358, 1.847) | 0.622 |
| Adjuvant chemotherapy treatment | 0.783 (0.290, 2.115) | 0.630 |
| Presence of extrahepatic disease on baseline imaging | 3.050 (1.247, 7.459) | 0.015 |