a, Diagram of trial design. b, Summary of pathological outcomes of all evaluable patients (n?=?19 patients). c, Summary of clinical outcomes of patients treated at MTD (n?=?18). d, Kaplan–Meier survival curves for overall survival, PFS and local PFS survival for patients treated at MTD (n?=?18 patients). e, A plot of the relationship between radiation dose and pathologic outcome at time of surgery (P?=?0.05), spearman correlation coefficient 0.45, CI (?0.01909, 0.7573). 12?Gy n?=?3 patients...