作者从皇家玛格利特医院和多伦多抗癌中心1958年～1991年收治的儿童脑瘤中筛选了912例患原发性脑瘤的儿童为研究对象,目的是测定其长期生存率,并分析放疗5年后的死亡原因。结果见到,全组病人的5年、10年、20年和30年的总生存率分别是51%、44%、37%和26%。5年、10年、20年和30年无复发存活率分别为49%、44%、42%和37%。在这组病人中,有377例为5年生存者,他们 The authors screened 912 children with primary brain tumors from children’s brain tumors treated at the Royal Margaret Hospital and the Toronto Cancer Center from 1958 to 1991 for the purpose of measuring their long-term survival and analyzing Causes of death after 5 years of radiotherapy. As a result, the overall survival at 5, 10, 20 and 30 years was 51%, 44%, 37% and 26%, respectively. Five-year, 10-year, 20-year, and 30-year recurrence-free survival rates were 49%, 44%, 42%, and 37%, respectively. Of this group of patients, 377 were 5-year survivors of them