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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)

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