Fig. 3From: Failure pattern and suggestions for target volume delineation of carcinoma showing thymus-like differentiation treated with intensity-modulated radiotherapyKaplan-Meier estimate of (a) regional recurrence-free survival (RRFS), and (b) overall survival (OS) between patients with or without irradiation for lateral neck nodal regions RT, radiotherapy; LR: lateral neck nodal regionsBack to article page