Results CT findins of 9 cases were almost defects of bilateral cerebral hemisphere and ventricle.Only a little remainder of occipital,frontal and/or temporal lobes were appearence.

• 结果9例CT扫描均表现为幕上双侧大脑半球及脑室绝大部分缺失,仅见少许残存的枕、额和/或颞叶组织,幕下结构正常。