Figure 1

(A,B) Kaplan–Meier curves for recurrence-free survival (A: RFS) and overall survival (B: OS). The x-axis represents the time in years from the end of the initial therapy to the event of recurrence (A) or from the date of diagnosis to mortality (B).The solid line represents the estimated survival function for either RFS or OS, and the dashed lines show the 95% confidence intervals. For OS: Number at risk at 0, 5, 10, 20, 30, and 40 years respectively: 14(0), 11(0), 7(2), 2(3), 1(3), and 1(3), with numbers in parentheses indicating censored cases. For RFS: Number at risk at 0, 5, 10, and 15 years respectively: 13(0), 7(0), 2(1), and 2(1), with numbers in parentheses representing censored cases.