Figure 1: Kaplan-Meier analysis of survival A) Considering T2 and T3 cancers, overall survival was improved in patients underwent a re-resection (median survival 37 months vs. 6) but the difference is marginally significant (p=0.07). B) Only if residual disease was absent or limited to a microscopic spread in regional nodes, this difference is statistically significant (median survival 58 months vs. 6; p=0.01).