Table 1.
The patients’ demographic and clinical characteristics
| Characteristics | Surgery (n = 92) | RFA (n = 46) | P value |
|---|---|---|---|
| Sex | 1.000 | ||
| Male/female | 58/34 | 29/17 | |
| Age (years) | 58.0 (51.0–65.8) | 58.5 (50.8–67.0) | 0.492 |
| Preoperative CEA (ng/mL) | 6.7 (2.9–22.3) | 5.4 (3.2–12.9) | 0.731 |
| Location of primary cancer | 0.802 | ||
| Colon/rectum | 58/34 | 30/16 | |
| Timing of metastasis | 0.277 | ||
| Synchronous/metachronous | 70/22 | 31/15 | |
| T stage | 0.798 | ||
| T4/T1–3 | 30/62 | 16/30 | |
| N stage | 0.899 | ||
| N0/N+ | 31/61 | 16/30 | |
| Median diameter (mm) | 30.0 (18.5–35.8) | 22.5 (16.8–36.3) | 0.249 |
| No. of tumors | 0.878 | ||
| 1/2–3 | 75/17 | 37/9 | |
| Location of liver metastasis | 0.076 | ||
| Unilobar/bilobar | 73/19 | 42/4 | |
| Neoadjuvant chemotherapy | 0.220 | ||
| Yes/no | 34/58 | 22/24 | |
| Extrahepatic disease | 0.160 | ||
| Yes/no | 4/88 | 5/41 | |
| Comorbidities | 0.232 | ||
| Hypertension | 14 | 5 | |
| Diabetes | 8 | 1 | |
| Cardiac | 5 | 3 | |
| Cerebrovascular | 5 | 2 | |
| Pulmonary or others | 2 | 4 | |
CEA carcinoembryonic antigen, RFA radiofrequency ablation