Preoperative evaluation with T-staging system for hilar cholangiocarcinoma

Figure 1 Kaplan-Meier survival analysis stratified by T stage. T stages seemed to be correlated with the survival time (χ² = 37.65, P < 0.001), and the survival time decreased progressively with increasing T staging. The cumulative 1-year survival rates of T1, T2 and T3 patients were 71.8%, 50.8% and 12.9%, respectively, and the cumulative 3-year survival rate was 34.4%,18.2% and 0%, respectively, the survival of different stage patients differed markedly (P < 0.001).