以往成髓细胞瘤治疗失败原因主要是后颅窝的复发,但提高剂量、改进放疗技术却未见疗效提高,局部控制不能得到保证且增加远期副作用。肿瘤转移至幕上及脊髓与放疗质量有关,另外戴眼罩所致筛板剂量严重不足亦可致幕上复发。作者回顾分析了1972～1991年在瑞士治疗的86例少儿成髓细胞瘤术后全脑全脊髓放疗,男66例,女20例,诊断时 In the past, the treatment of myeloblastoma failed mainly because of the recurrence of the posterior fossa. However, improving the dose and improving the radiotherapy did not improve the curative effect. Local control could not be guaranteed and the long-term side effects were increased. Tumor metastasis to the supratentorial and spinal cord and the quality of radiotherapy, while wearing a blister caused by a serious lack of sieve plate can also cause screen recurrence. The authors retrospectively analyzed 86 cases of pediatric myeloblastoma treated with whole-brain whole-neck radiotherapy in Switzerland from 1972 to 1991, including 66 males and 20 females. At the time of diagnosis