鼻咽癌多采用耳前野和鼻前野照射,脑桥位于放射野内,有可能引起放射性脑桥损伤,但有关文献报道很少。作者报道1998年10月至2000年3月门诊随访中发现的5例放射性脑桥损伤病例,初步探讨其临床特点、诊断方法、防治及相关因素。1　资料与方法:本组病例均为鼻咽癌首程放射治疗后脑 Nasopharyngeal carcinoma and the use of more than the former field of anterior and nasal irradiation, the pons located in the radiation field, may cause radioactive pontine injury, but little literature reported. The authors reported 5 cases of radioactive pontine lesions found during outpatient follow-up from October 1998 to March 2000, and initially discussed the clinical features, diagnosis, prevention and treatment and related factors. 1 Materials and Methods: This group of patients are nasopharyngeal cancer after the first radiation therapy brain