Table 1 Characteristics of included patients and analysis of liver metastasis tumors
Parameters | Total patients (n, %) |
|---|---|
Median age (years) | 59.5 (25-84) |
Age, years | Â |
 ≤ 60 | 75 (54.0) |
 > 60 | 64 (46.0) |
Sex | Â |
 Male | 86 (61.9) |
 Female | 53 (38.1) |
Primary tumor location | Â |
 Colon | 97 (69.8) |
 Rectum | 42 (30.2) |
Primary tumor differentiation | Â |
 Well to moderate | 108 (77.7) |
 Poor | 31 (22.3) |
T stage | Â |
 T1–3 | 96 (69.1) |
 T4 | 43 (30.9) |
N stage | Â |
 N0 | 50 (36.0) |
 N1–2 | 89 (64.0) |
Timing of liver metastases | Â |
 Synchronous | 75 (54.0) |
 Metachronous | 64(46.0) |
Number of liver metastases | Â |
 1 | 91 (65.5) |
 2 | 29 (20.9) |
 3 | 12(8.6) |
 4 | 4 (2.9) |
 5 | 3 (2.2) |
Liver metastases diameter (cm) | Â |
 Median (range) | 2.5 (0.5-8.4) |
 ≤ 3 | 99 (71.2) |
 > 3 | 40 (28.8) |
Distribution of liver metastases | Â |
 Unilobar | 117 (84.2) |
 Bilobar | 22 (15.8) |
TBS | Â |
 Median (range) | 2.83 (1.12-8.46) |
 ≤ 3 | 77 (55.4) |
 > 3 | 62 (44.6) |
 Median liver resection margin (cm) | 0.8 (0-3.5) |
Adjuvant chemotherapy after liver resection | Â |
 Yes | 85 (61.2) |
 No | 54 (38.8) |
DNA ploidy | Â |
 Diploid | 32 (23.0) |
 Aneuploid | 95 (68.3) |
 Tetraploid | 12 (8.6) |
Stroma fraction | Â |
 Low stroma | 85 (61.2) |
 High stroma | 54 (38.8) |
Nucleotyping | Â |
 Chromatin homogeneous | 79 (56.8) |
 Chromatin heterogeneous | 60 (43.2) |