自１９７７～１９９０年采用放疗及放射和手术综合治疗上颌窦癌１６１例。全组１、３、５和１０年存活率分别为７８．３％、４４．７％、３１．６％和１４．３％。单纯放疗和综合治疗的５年存活率分别为２１．７％和４５．８％。影响预后的主要因素为临床分期，其次为病理分级。治疗失败的主要原因为局部肿瘤未控及复发。讨论了放疗失败原因并介绍了直线加速器电子束和光子混合线束治疗方法。 From 1977 to 1990, radiotherapy combined with radiotherapy and surgery for maxillary sinus cancer in 161 cases. The 1,3,5 and 10 year survival rates were 78.3%, 44.7%, 31.6% and 14.3% respectively. The 5-year survival rates of radiotherapy and comprehensive treatment were 21.7% and 45.8% respectively. The main factors affecting the prognosis of clinical staging, followed by pathological grade. The main reason for treatment failure is uncontrolled and recurrence of local tumor. The reasons for the failure of radiotherapy were discussed and the treatment methods for electron beam and photon mixed linear accelerator of linear accelerator were introduced.