Fig. 2From: Comparing the 7th and 8th editions of UICC/AJCC staging system for nasopharyngeal carcinoma in the IMRT eraOverall survival (a, b), disease-free survival (c, d), and distant failure-free survival (e, f) for each N categories in the 7th (a, c, e) and 8th editions (b, d, f)Back to article page