尽管手术及放疗技术的发展，仍有１０％～４０％患者在常规治疗后出现局部复发。可能的原因是瘤细胞乏氧、放射敏感性低及瘤细胞的快速再增殖。放射治疗的时限被认为对局部控制有重要影响，而手术与放疗共同时限的作用则存在争论。该文研究术后加速放疗的意义。１９８８年１２ Despite the development of surgery and radiotherapy techniques, there are still 10% to 40% of patients with local recurrence after conventional treatment. Possible causes are hypoxic tumor cells, low radiosensitivity, and rapid repopulation of tumor cells. The time limit of radiation therapy is considered to have an important influence on local control, and the role of the common time limit of surgery and radiotherapy is controversial. This article studies the significance of postoperative accelerated radiotherapy. 12 of 1988