(A) Survival curves according to clinical response. (A) Survival curves according to clinical response. (B) Disease-free survival (DFS) according to clinical response stratified by tumour size and nodal status. (C) Survival analysis according to the type of surgery. DDFS, distant disease-free survival; OS, overall survival; PD, progressive disease; PR, partial response; SD, stable disease. Takayuki Ueno et al. ESMO Open 2018;3:e000314 Copyright © European Society for Medical Oncology. All rights reserved.