Fig. 2From: Patterns of recurrence after low-dose postoperative radiotherapy for head and neck squamous cell carcinomaTreatment outcomes estimated using the Kaplan–Meier method. A Kaplan-Meier curves of overall survival (OS), disease-free survival (DFS), and locoregional control (LRC). B OS stratified by the group of patients with OCC (oral cavity carcinoma) or those without. C DFS stratified by the group of patients with OCC or those without. D LRC stratified by the group of patients with OCC or those withoutBack to article page