Unambiguous advanced radiologic extranodal extension determined by MRI predicts worse outcomes in nasopharyngeal carcinoma: Potential improvement for future editions of N category systems

Yan‐Ping Mao, Shunxin Wang, William M. Lydiatt, Jatin P. Shah, A. Dimitrios Colevas, Anne W.M. Lee, Brian O’Sullivan, Rui Guo, Weijie Luo, Yu‐Pei Chen, Li Tian, Ling‐Long Tang, Ying Sun, Lizhi Liu, Jian Ren, Jun Ma