1978年1月至1988年12月我科共收治髓母细胞瘤术后患者30例,现就放射剂量、年龄、肿瘤侵犯的范围与生存率的关系分析如下。 1 材料与方法 1.1 年龄与性别:患者年龄3—44岁.平均20岁,儿童(<12岁)患者11例,占36.7％,成人(≥12岁)患者19例,占63.3％。男18例,女12例,男女之比为1.5:1。病变累及的范围:病变限于蚓部14例,占46.7％,小脑半球4例,占13.3％,累及四脑 January 1978 to December 1988 our department received a total of 30 patients with medulloblastoma surgery, now on the radiation dose, age, the extent of tumor invasion and the relationship between the survival rate as follows. 1 Materials and Methods 1.1 Age and gender: The patients were 3-44 years old, with an average of 20 years old, 11 children (<12 years old), accounting for 36.7%, and 19 adults (≥12 years old) accounting for 63.3%. There were 18 males and 12 females with a ratio of 1.5: 1. Lesions covered range: lesions limited to vermis in 14 cases, accounting for 46.7%, 4 cases of cerebellar hemispheres, accounting for 13.3%, involving four brain