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