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Retrospective Cohort Study
©Author(s) (or their employer(s)) 2026.
World J Gastroenterol. Mar 14, 2026; 32(10): 115130
Published online Mar 14, 2026. doi: 10.3748/wjg.v32.i10.115130
Table 1 Clinical backgrounds of enrolled patients and histopathological features of primary colorectal cancer and liver metastases, n (%)/median (minimum-maximum)
Parameter
Stage I-III (n = 44)
Stage IV (n = 55)
P value
Age at the diagnosis (years)64 (46-73)62 (29-78)0.31
GenderMale29 (65.9)34 (61.8)0.67
Female15 (34.1)21 (38.2)
Primary tumor
LocationRight colon8 (18.2)12 (21.8)0.65
Left colon36 (81.8)43 (78.2)
Size (cm)3.5 (0.8-8.3)4.3 (1.0-7.5)
Pathologic T stageT11 (2.3)0 (0.0)0.25
T26 (13.6)1 (1.8)
T335 (79.5)48 (87.3)
T42 (4.5)6 (10.9)
Histological typeNot otherwise specified39 (88.6)51 (92.7)
Mucinous4 (9.1)2 (3.6)
Other1 (2.3)2 (3.6)
Pathologic N stageN013 (29.5)13 (23.6)0.51
N116 (36.4)22 (40.0)
N215 (34.1)20 (36.4)
American Joint Committee on Cancer 8th stagingStage I1 (2.3)
Stage II12 (27.3)
Stage III31 (70.4)
Stage IV55 (100)
Grade114 (31.8)12 (21.8)0.77
226 (59.1)37 (67.3)
34 (9.1)6 (10.9)
KRAS statusMutated11 (25.0)20 (36.4)0.26
Wild-type25 (56.8)27 (49.1)
Not tested8 (18.2)8 (14.5)
BRAF statusMutated1 (2.3)0 (0.0)0.27
Wild-type35 (79.5)44 (80.0)
Not tested8 (18.2)11 (20.0)
Microsatellite instability statusHigh1 (2.3)1 (1.8)0.90
Low35 (79.5)42 (76.4)
Not tested8 (2.3)12 (21.8)
CEA ng/mL8.9 (0.8-1649.0)6.8 (1.0-945.0)0.90
CEA< 5 ng/mL13 (46.4)18 (46.2)
> 5 ng/mL15 (53.6)21 (53.8)0.98
Number of examined lymph nodes11 (0-43)13 (1-34)0.38
Lymph node ratio0.13 (0-0.32)0.22 (0-0.57)0.14
Liver metastases
Number1 (1-7)2 (1-24)0.08
Size (cm)2.7 (0.6-7.1)2.0 (0.4-26.0)0.02
Grade118 (42.9)21 (39.6)0.75
224 (57.1)32 (60.4)
Metastasis resectionR029 (69.0)40 (76.9)0.39
R statusR113 (31.0)12 (23.1)
Chemotherapy ± targeted therapyCHT alone30 (68.2)28 (50.9)0.07
CHT + anti-vascular endothelial growth factor4 (9.1)11 (20.0)
CHT + anti-epidermal growth factor receptor5 (11.4)9 (16.4)
No treatment2 (4.5)4 (7.3)
Not known3 (6.8)3 (5.4)
Chemotherapy regimensFOLFOX16 (36.4)31 (56.4)0.05
Dle Gramont9 (20.5)7 (12.7)
FOLFIRI2 (4.5)4 (7.3)
Others12 (27.3)6 (10.9)


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