Figure 1. Kaplan–Meier analyses of recurrence-free survival rates in patients with pancreatic neuroendocrine neoplasm according to risk score. The risk score indicates the number of risk factors for recurrencefree survival, such as G2–G3 and the presence of microvascular invasion, derived via a multivariate analysis. The 3, 5, and 10-year recurrence-free survival rates of patients with risk scores of 0 (n=82), 1 (n=28) and 2 (n=28) were 100%, 100% and 97%; 96%, 91% and 78%; and 47%, 32% and 12%, respectively (p<0.001).