神经系统肿瘤并非罕见,原发脑瘤的发病率为7.8～12.5/10万人口,我国统计稍低为1.34/10万人口,占全身各部位肿瘤的1.8％,占儿童全身各部位肿瘤的7％左右。根据联合国卫生组织1972年报告,中枢神经系统肿瘤平均年死亡率约为30/100万人口,主要死于恶性脑瘤,占全身恶性肿瘤死亡率中1.25％,上海市1974年报告占死亡病因中的第10位,北京市1975年报告占第13位,但国内外各地区统计仍有一定差异。为了对神经系统肿瘤的流行病学情况, Nervous system tumors are not uncommon. The incidence of primary brain tumors is 7.8-12.5 / 10 million. Our country has a slightly lower population of 1.34 per 100 000 population, accounting for 1.8% of all parts of the body and 7% of all tumors in children %about. According to the report of the United Nations in 1972, the average annual death rate of central nervous system tumors is about 30/100 million, mainly due to malignant brain tumors, accounting for 1.25% of the total body cancer deaths. In 1974, Shanghai reported the cause of death Of the 10th place, Beijing reported in 1975 accounted for 13th place, but statistics at home and abroad are still some differences. For the epidemiology of nervous system tumors,