目的探讨鼻咽癌放疗后残留或复发的CT和MRI表现及临床意义。方法收集我院自2000年以来经病理证实后行放射治疗的鼻咽癌患者116例,放疗期间及放射治疗后均行CT检查,部分行MRI检查,我们对这些患者的CT和MRI表现进行综合性分析。结果 116例患者中,均行CT检查,53例行MRI检查,经MRI增强扫描表现及临床特点诊断复发37例,侵及颅底15例,结合影像及临床表现考虑局部残留28例。结论鼻咽癌放疗后残留及复发患者在放疗后病例中占有一定比例,因此早期诊断是否存在肿瘤残留或复发对提高患者生存率十分重要,影像学检查是非常有效的手段,结合CT及MRI表现,笔者认为MRI增强扫描是诊断肿瘤复发的最佳方法和可靠依据。 Objective To investigate the CT and MRI findings of residual or recurrent nasopharyngeal carcinoma after radiotherapy and its clinical significance. Methods A total of 116 patients with nasopharyngeal carcinoma who had undergone radiotherapy after pathological examination in our hospital from 2000 were enrolled in the study. CT and MRI were performed during radiotherapy and after radiotherapy. The CT and MRI findings of these patients were comprehensively analyzed Sexual analysis. Results Of the 116 patients, CT was performed and 53 were examined by MRI. Twenty-seven cases were diagnosed as recurrent and 15 cases were penetrated into the skull base by enhanced MR imaging and clinical features. Twenty-eight cases were considered by imaging and clinical manifestations. Conclusion Residual and recurrent NPC patients after radiotherapy occupy a certain proportion of cases after radiotherapy. Therefore, early diagnosis of tumor residual or recurrence is very important to improve the survival rate of patients. Imaging examination is a very effective means, combined with CT and MRI findings , I believe that MRI enhanced scan is the best way to diagnose tumor recurrence and reliable basis.