Oral Oncol
-
The purpose of this study was to evaluate the 7th edition UICC/AJCC staging system for nasopharyngeal carcinoma (NPC) patients who were treated with intensity modulated radiation therapy (IMRT). ⋯ When treated with IMRT, the difference in the LRFS, DSS, and OS between T1 and T2 patients diminished, indicating that it is rational to merge T2 into T1. The prognostic value of the N classification of the current staging system had not changed much compared to the 6th edition.