Figure 1

The overall survival ( OS) of hepatocellular carcinoma (HCC) with and without CK19 expression in primary liver tumor. The solid line represents HCC without CK19 expression in primary liver tumor and the dashed line represents HCC with CK19 expression in primary liver tumor. The horizontal axis is the survival in months and the vertical axis is the percentile cumulative survival. The median OS was 9.37 ± 3.28 (95% CI 2.942 to 15.798) months for tumor with CK19 expression and 28.96 ± 20.96 (95% CI 0 to 70.039) months for tumor without CK19 expression (P = 0.026). HCC with CK19 expression in primary liver tumor had a significantly poorer OS.