The main reason of treatment failure in local advanced nasopharyngeal carcinoma is distant metastasis and local recurrence.
2
放疗仍是复发鼻咽癌治疗的主要手段，手术和化疗的有效临床资料十分缺乏。
Radiotherapy is still the main modality. The available clinical data of efficacy with surgery or with chemotherapy are still scarce.
3
目的：初步评价超分割外照射加立体定向适形放射剂量治疗局部复发鼻咽癌的临床疗效及毒副反应。
OBJECTIVE:To evaluate the clinical value of hyperfractionated external irradiation followed by 3D conformal radiation therapy boost to recurrent NPC after primary radiotherapy.
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