Fig. 2

The postoperative prognosis factors for the gallbladder NENs. A Patients with higher differentiation levels (I + II) has better postoperative overall survival than those of the patients with lower differentiation levels (III+IV) (Log-rank test, P < 0.001). B The postoperative survival of NET was better than that of NEC and MiNENs (Log-rank test, P < 0.0001). C Patients receiving radical surgery have worse overall survival than patients receiving the local regional resection (Log-rank test, P = 0.006). D Patients with lymph node metastasis have worse postoperative overall survival than those of patients without lymph node metastasis (Log-rank test, P = 0.014)