Abstract: Objective The occurrence of cerebral venous thrombosis (CVT) has been reported rarely amongpatients with spontaneous intracranial hypotension (SIH). We reviewed our experience andattempted to establish a causal relationship between these 2 entities.Methods We reported 2 cases in our experience with spontaneous intracranial hypotension andcerebral venous thrombosis and reviewed the relevant literature.Results Clinical or radiographic evidences for SIH preceding CVT were found in 2 patients. Therewere no other CVT risk factors in 2 cases, except SIH. Therefore we proposed that SIH should beconsidered as one of risk factors of CVT. CVT relieved after the intracranial pressure was corrected.Conclusion Spontaneous intracranial hypotension may result in cerebral venous thrombosis,which is also confirmed by relevant literatures.

Key words: Intracranial pressure; Sinus thrombosis; intracranial; Headache

摘要： 目的 自发性低颅压（spontaneous intracranial hypotension，SIH）及颅内静脉窦血栓形成（cerebralvenous thrombosis，CVT）均为神经科少见疾病，而SIH合并CVT更为少见，本研究旨在探寻二者之间有无内在联系。方法 报道2例SIH并发CVT的临床资料，并复习相关文献。结果 2例患者SIH在前，CVT发生在后，同时排除了其他导致静脉窦血栓的危险因素，因此推测SIH也是CVT的危险因素之一。经补液纠正低颅压后，静脉窦血栓也随之好转。结论 SIH可能导致CVT，这一观点也被相关文献所证实。

关键词: 内颅压; 窦血栓形成; 颅内; 头痛