Table 5. Prognostic variables of recurrence-free survival according to cancer stem cell marker expression in HCC.

Values are presented as mean ± standard deviation.
HCC, hepatocellular carcinoma; CK, cytokeratin; EpCAM, epithelial cell adhesion molecule.
a)EpCAM expression could not be analyzed because data were censored in all cases. b)Positive cancer stem cell marker expression included even one positive sample of each stem cell marker.