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CK20mRNA expression and cumulative tumor metastasis after operation (Fisher’s exact test).
| CK20mRNA expression | n | Within 6 mo | Within 12 mo | Within 24 mo |
| Positive | 23 | 8 (34.7%) | 17 (73.9%) | 19 (82.6%) |
| Negative | 17 | 1 (5.9%) | 6 (35.3%) | 13 (76.5%) |
| P-value | 0.043 | 0.02 | 0.631 |
