Table 2. Baseline characteristics of patients treated with resection or ablation after PSM.
| Characteristics | Resection (n = 145, %) | Ablation (n = 145, %) | P value |
|---|---|---|---|
| Age | |||
| Average | 57.15 ± 10.26 | 56.04 ± 13.22 | 0.629 |
| ≤60 | 87(60.0) | 91(62.8) | |
| >60 | 58(40.0) | 54(37.2) | |
| Gender | 0.524 | ||
| Male | 98(67.6) | 103(71.0) | |
| Female | 47(32.4) | 42(29.0) | |
| Comorbidity | 0.556 | ||
| No | 76(52.4) | 81(55.9) | |
| Yes | 69(47.6) | 64(44.1) | |
| Primary tumor side | 0.779 | ||
| Left-side colorectum | 111(76.6) | 113(77.9) | |
| Right-side colon | 34(23.4) | 32(22.1) | |
| TNM stage | |||
| T stage | 0.158 | ||
| 1–3 | 73(50.3) | 61(42.1) | |
| 4 | 72(49.7) | 84(57.9) | |
| N stage | 0.583 | ||
| 0 | 59(40.7) | 62(42.8) | |
| 1 | 59(40.7) | 51(35.1) | |
| 2 | 27(18.6) | 32(22.1) | |
| IVTTa | 0.623 | ||
| Positive | 53(36.6) | 44(30.3) | |
| Negative | 73(50.3) | 69(47.6) | |
| Differentiation (primary) | 0.500 | ||
| Poor | 35(24.1) | 28(19.3) | |
| Moderate | 100(69.0) | 109(75.2) | |
| Well | 10(6.9) | 8(5.5) | |
| Metastases diameter (cm) | 0.857 | ||
| ≤3 | 128(88.3) | 127(87.6) | |
| >3, ≤5 | 17(11.7) | 18(12.4) | |
| Metastases number | 0.459 | ||
| 1 | 77(53.1) | 73(50.3) | |
| 2 | 30(20.7) | 40(27.6) | |
| 3 | 20(13.8) | 14(9.7) | |
| 4–5 | 18(12.4) | 18(12.4) | |
| Metastases distribution | 1.000 | ||
| Unilobar | 79(54.5) | 79(54.5) | |
| Multilobar (>1 lobe) | 66(45.5) | 66(45.5) | |
| Preoperative chemotherapy | 0.616 | ||
| No | 49(33.8) | 45(31.0) | |
| Yes | 96(66.2) | 100(69.0) | |
| Postoperative chemotherapy | 0.860 | ||
| No | 18(12.4) | 19(13.1) | |
| Yes | 127(87.6) | 126(86.9) | |
| KRAS statusb | 0.652 | ||
| Wild type | 41(28.3) | 44(30.3) | |
| Mutation type | 20(13.8) | 18(12.4) | |
| CEA level (ng/ml) | 0.724 | ||
| ≤5 | 65(44.8) | 68(46.9) | |
| >5 | 80(55.2) | 77(53.1) | |
| Timing of metastasis (months) | 1.000 | ||
| Synchronous (<12) | 18(12.4) | 18(12.4) | |
| Metachronous (≥12) | 127(87.6) | 127(87.6) |
Notes.
a
Data of 239 patients were available.
b
Data of 123 patients were available.
- PSM
- Propensity score matching
- IVTT
- Intravascular tumor thrombus