Table 2 The characteristics of liver metastasis
| Â | Centrally located | Peripherally located | P values |
|---|---|---|---|
( n = 24) | ( n = 135) | ||
CEA level before hepatectomy (ng/ml) | 366.2 ± 205.5 (0.88 to 4,280.0) | 109.9 ± 53.2 (0.50 to 7,025.0) | 0.095 |
Interval of hepatic metastasisa | |||
 Synchronous | 17 (70.8%) | 87 (64.4%) | 0.544 |
 Metachronous | 7 (29.2%) | 48 (35.6%) |  |
Involved segment(s) | |||
 Single | 3 (12.5%) | 56 (41.5%) | 0.006 |
 Multiple | 21 (87.5%) | 79 (58.5%) |  |
Lobar distribution | |||
 Unilobar | 6 (25.0%) | 108 (80.0%) | 0.000 |
 Bilobar | 18 (75.0%) | 27 (20.0%) |  |
Maximal diameter of the largest metastasis (cm) | 5.9 ± 0.8 (1.2 to 17.9) | 3.0 ± 2.4 (0.3 to 10.8) | 0.000 |
Number of metastasis | |||
 Solitary | 10 (41.7%) | 91 (67.4%) | 0.016 |
 Multiple | 14 (58.3%) | 44 (32.6%) |  |
Differentiation of metastasis | |||
 Well | 5 (20.8%) | 10 (7.4%) | 0.113 |
 Moderately | 18 (75.0%) | 120 (88.9%) |  |
 Poorly | 1 (4.2%) | 5 (3.7%) |  |