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Kaplan-Meier analysis of (A) 5-year overall survival (OS) and (B) disease-specific survival (DSS) of patients with T3N1 and different stage IV groups (T1N2, T2N2, T3N2, T4N0, T4N1 and, T4N2) disease. (C) 5-year OS and (D) DSS of patients with stage II (red line) and stage III after removal of T3N1 (blue line) disease.
