Fig. 2From: Prognostic value of pre-treatment [18F] FDG PET/CT in recurrent nasopharyngeal carcinoma without distant metastasisKaplan–Meier curves of overall survival for NPC patients stratified by the MRI and with PET/CT groups: (A) Total; (B) I-II; (C) III-IVA; (D) r0-II; (E) rIII-IVA. Abbreviations: NPC: nasopharyngeal carcinoma; r: Recurrent; MRI: magnetic resonance imaging; PET/CT: positron emission tomography/computed tomography. *Based on the eighth edition of the Union for International Cancer Control/American Joint Committee on Cancer (UICC/AJCC) staging system according to MRIBack to article page