Fig. 2From: Identifying optimal candidates for postoperative adjuvant therapy among regional persistent/recurrent nasopharyngeal carcinoma patients after neck dissectionKaplan–Meier curves for (A) progression-free survival (PFS), B overall survival (OS), C locoregional relapse-free survival (LRFS), and (D) distant metastasis-free survival (DMFS) in the PSM cohort of 228 patients with regional persistent/recurrent NPCBack to article page