Simple cholecystectomy is an adequate treatment for grade I T1bN0M0 gallbladder carcinoma: Evidence from 528 patients

Figure 3 The overall survival and disease-specific survival of patients with T1b gallbladder cancer stratified by pathological grades and surgical treatment using Kaplan-Meier analysis. A: Overall survival (OS) of patients with grade I T1b gallbladder cancer (GBC) by type of surgery (P = 0.734); B: Disease-specific survival (DSS) of patients with grade I T1b GBC by type of surgery (P = 0.953); C: OS of patients with grade II T1b GBC by type of surgery (P = 0.002); D: DSS of patients with grade II T1b GBC by type of surgery (P = 0.039); E: OS of patients with grade III, IV T1b GBC by type of surgery (P = 0.005); F: DSS of patients with grade III, IV T1b GBC by type of surgery (P = 0.009). SC: Simple cholecystectomy; LN: Lymph node resection; RC: Radical cholecystectomy.