Fig. 2

Kaplan–Meier curve for the withdrawal rate of EBD after ESD. The withdrawal rates of EBD in the NRF and RF groups 1 year after ESD were 86.5% (77/114) and 38.3% (26/59), respectively, and 3 years after ESD were 96.1% (52/53) and 58.5% (39/59), respectively. EBD, Endoscopic balloon dilatation; ESD, Endoscopic submucosal dissection; NRF, Non-refractory; RF, Refractory