Table 1 Comparison of clinical data between two groups of patients with recurrent colorectal liver metastases after hepatectomy
Variable |  | RFA (n = 144) | Repeat hepatic resection (n = 50) | χ2 | P | v |
|---|---|---|---|---|---|---|
Sex ratio (n) | Male:Female | 87:57:00 | 33:17:00 | 0.674 | 0.411 | 1 |
Age(years) | ≤ 60 | 66 (45.8) | 21 (42.0) | 0.293 | 0.588 | 1 |
> 60 | 78 (54.2) | 29 (58.0) | ||||
Primary tumors location (n%) | Colon | 90 (62.5) | 30 (60.0) | 0.132 | 0.717 | 1 |
Rectum | 54 (37.5) | 20 (40.0) | ||||
Timing of liver metastases (n%) | Synchronous | 117 (81.3) | 35 (70.0) | 3.466 | 0.063 | 1 |
Metachronous | 27 (18.7) | 15 (30.0) | ||||
Distribution of liver metastases (n%) | Unilobar | 75 (52.1) | 36 (72.0) | 8.409 | 0.004 | 1 |
Bilobar | 69 (47.9) | 14 (28.0) | ||||
Preoperative chemotherapy (n%) | Â | 64 (44.4) | 15 (30.0) | 4.438 | 0.035 | 1 |
CEA (ng/ml) | ≤ 10 | 87 (60.4) | 34 (68.0) | 1.257 | 0.262 | 1 |
> 10 | 57 (39.6) | 16 (32.0) | ||||
Size of tumors (cm) | ≤ 3 | 102 (70.8) | 37 (74.0) | 0.256 | 0.613 | 1 |
> 3 | 42 (29.2) | 13 (26.0) | ||||
Number of metastatic tumors (n%) | Solitary | 63 (43.8) | 30 (60.0) | 5.256 | 0.022 | 1 |
Multiple | 81 (56.2) | 20 (40.0) | ||||
Relapse time interval (months) | ≤ 6 | 57 (39.6) | 14 (28.0) | 3.007 | 0.083 | 1 |
> 6 | 87 (60.4) | 36 (72.0) |