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Table 3 The association between imaging characteristics and KRAS mutation according to a Pearson’s Chi-square or Fisher’s exact test

From: Imaging features associated with survival outcomes among colorectal cancer patients with and without KRAS mutation

Imaging variable KRAS mutation (-) KRAS mutation (+) P value
Regional lymph node metastasis (%) (n = 67) (n = 46) 0.736
 No 6 (8.96) 5 (10.87)  
 Yes 61 (91.04) 41 (89.13)  
Necrosis (n = 61) (n = 41) 0.011
 No 19 (31.15) 4 (9.76)  
 Yes 42 (68.85) 37 (90.24)  
Distant lymph node metastasis (%)    0.790
 No 51 (76.12) 34 (73.91)  
 Yes 16 (23.88) 12 (26.09)  
Liver metastasis (%)    0.167
 No 29 (43.28) 26 (56.52)  
 Yes 38 (56.72) 20 (43.48)  
Lung metastasis (%)    0.166
 No 61 (91.04) 37 (82.22)  
 Yes 6 (8.96) 8 (17.78)  
Bone metastasis (%)    > 0.999
 No 66 (98.51) 44 (97.78)  
 Yes 1 (1.49) 1 (2.22)