Objective To investigate the clinical features, pathogenesis and the changes of cerebrospinal fluid(CSF)and imageology in primary intracranial hypotension(PIH).
目的探讨原发性低颅压综合征（PIH）的临床特点、发病机制、脑脊液（CSF）及影像学改变。
2
Objective To study the clinical course, pathology and imageology of children's botryoid rhabdomyosarcoma.
目的研究小儿葡萄状横纹肌肉瘤的临床过程、病理形态学和影像学改变。
3
Methods The clinical data and imageology data of 21 patients of CVST were analyzed retrospectively.