To evaluate the rationality and limitations of the seventh edition of the American JointCommittee onCancer (the 7thAJCCedition)\nT-staging system for locally advanced nasopharyngeal carcinoma (NPC). The prognosis of 358 patients with stage T3/T4 NPC\ntreated with intensity-modulated radiotherapy (IMRT) was analyzed with the Kaplanââ?¬â??Meier method or the log-rank test. The 7th\nAJCC staging system of NPC has some limitations in that the T category is neither the significant factor in OS/LRFS nor the\nindependent prognostic factor in OS/LRFS/DMFS/DFS (
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