Objective To investigate the safety and efficacy of nimotuzumab combined with concurrent chemoradiotherapy for locally advanced nasopharyngeal carcinoma.Methods Forty untreated cases of III-Ⅳa stage nasopharyngeal undifferentiated non-keratinizing carcinoma were divided into two groups according to their first visit date,20 cases in each group.The treatment group was given nimotuzumab(intravenous infusion of 100mg once a week),and the treatment lasted for 6-8 weeks;Conformal intensity modulated radiotherapy...