鼻咽癌是我国常见的恶性肿瘤之一,放射治疗为首选治疗方式,鼻咽癌患者在全程放疗后约10%～20%局部仍残存肿块,其中肿瘤残留占6.7%～13%,复发率为20%～35%。分次立体定向放射治疗(fractionated stereotaction radiotherapyFSRT)具有靶区剂量集中、靶区周围正常组织和器官接受的剂量大大下降的特点,目前已成为鼻咽癌放疗后局部残留和复发的重要治疗手段之一。我院自1997年引用X刀并应用FSRT技术治疗36例,使局部残留和复发鼻咽癌患者取得较 Nasopharyngeal carcinoma is one of the most common malignant tumors in our country. Radiation therapy is the first choice of treatment. Nasopharyngeal carcinoma patients still have some residual tumor in the range of 10% ~ 20% after radiotherapy. The residual tumor accounts for 6.7% ~ 13% 20% to 35%. Fractionated stereotactic radiotherapy (FSRT) has the characteristics of dose concentration of the target area and the dose of the normal tissues and organs around the target area greatly decreased, and has become one of the important treatment methods for the local residual and recurrence of nasopharyngeal carcinoma after radiotherapy . Our hospital since 1997, X knife and the application of FSRT treatment of 36 cases of local residual and recurrent nasopharyngeal cancer patients get more