1临床资料本组13例患者，年龄5～37岁，平均15．6岁，男9例，女4例。7例肿瘤位于松果体区，3例在侧脑室，后颅窝2例，鞍区1例。临床主要表现为颅内压增高、眼球运动障碍、视力受损等。CT检查，除发现松果体区和侧脑室占位外，尚可见脑积水及脑室系统扩大，其中6例为囊性占位，7 1 Clinical data The group of 13 patients, aged 5 to 37 years, mean 15.6 years, 9 males and 4 females. Seven of the tumors were located in the pineal region, three in the lateral ventricle, two in the posterior fossa, and one in the sellar region. Clinical manifestations of increased intracranial pressure, eye movement disorders, visual impairment and so on. CT examination, in addition to the discovery of pineal region and lateral ventricle space, still visible hydrocephalus and ventricular system expansion, of which 6 were cystic space, 7