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Table 1 The general demographic and clinicopathological features of mucinous colon adenocarcinoma liver metastasis (M-CLM) and classical colon adenocarcinoma liver metastasis (A-CLM) patients

From: Surgery improves the prognosis of colon mucinous adenocarcinoma with liver metastases: a SEER-based study

Variables A-CLM (5510) M-CLM (306) P value
Race
 White 4102 (74.4%) 232 (75.8%)  
 Black 935 (17.0%) 55 (18.0%)  
 Others 473 (8.6%) 19 (6.2%) 0.501
Age (years)
  ≤ 60 2023 (36.7%) 101 (33.0%)  
 >60 3487 (63.3%) 205 (67.0%) 0.190
Sex
 Female 2439 (44.3%) 153 (50.0%)  
 Male 3071 (55.7%) 153 (50.0%) 0.049
CEA
 Normal 593 (10.8%) 33 (10.8%)  
 Elevated 3244 (58.9%) 184 (60.1%)  
 Unknown 1673 (30.4%) 89 (29.1%) 0.890
Primary tumor size (cm)
  ≤ 5 2408 (43.7%) 119 (38.9%)  
 >5 1860 (33.8%) 156 (51.0%)  
 Unknown 1242 (22.5%) 39 (10.1%) < 0.001
Tumor number
 Solitary 4435 (80.5%) 248 (81.0%)  
 Multiple 1075 (19.5%) 58 (19.0%) 0.811
Location
 Right colon 2403 (43.6%) 181 (59.2%)  
 Transverse colon 486 (8.8%) 34 (11.1%)  
 Left colon 2621 (47.6%) 91 (29.7%) < 0.001
Differentiation
 Grade I/II 3634 (66.0%) 188 (61.4%)  
 Grade III/IV 1172 (21.3%) 79 (25.8%)  
 Unknown 704 (12.8%) 39 (12.7%) 0.158
pT stage
0–2 562 (10.2%) 24 (7.8%)  
3–4 3892 (70.6%) 260 (85.0%)  
 Unknown 1054 (19.1%) 22 (7.2%) < 0.001
pN stage
N0 1668 (30.3%) 62 (20.3%)  
N+ 3391 (61.5%) 233 (76.1%)  
 Unknown 451 (8.2%) 11 (3.6%) < 0.001
Examined lymph nodes 12.52 ± 11.43 16.26 ± 10.41 < 0.001
Positive lymph nodes 4.41 ± 5.04 5.37 ± 5.84 0.003
Surgery type
 No surgery 1627 (29.5%) 34 (11.1%)  
 Any surgery 3876 (70.3%) 272 (88.9%)  
 Unknown 7 (0.2%) 0 (0%) < 0.001