%A ZHAO Nan, WU Tong, CHENG Bin %T Research advances on second primary malignancies of oral cavity following radiotherapy for nasopharyngeal carcinoma %0 Journal Article %D 2016 %J Journal of International Oncology %R %P 145- %V 43 %N 2 %U {https://gjzlx.sdfmu.edu.cn/CN/abstract/article_9895.shtml} %8 2016-02-08 %X Radiotherapy is the primary treatment modality for nasopharyngeal carcinoma（NPC） which can effectively control the disease. Oral cavity, anatomically near nasopharyngeal region is the main area for the occurrence of complication of radiotherapy. Second primary malignancy （SPM） in oral cavity is an important factor interferencing NPC patients survival rate. The etiology of oral SPM is unclear and, the prognosis is poor. The research of it is still in exploration.