后颅窝硬脑膜下积液与自发性颅内低压相关。
Subdural effusions in the posterior fossa associated with spontaneous intracranial hypotension.
作者信息
Watanabe Arata, Horikoshi Toru, Uchida Mikito, Koizumi Hidehito, Yamazaki Hiromichi, Kinouchi Hiroyuki
机构信息
Department of Neurosurgery, Faculty of Medicine, University of Yamanashi, Japan.
出版信息
Can J Neurol Sci. 2006 May;33(2):205-8. doi: 10.1017/s0317167100004984.
BACKGROUND
Misdiagnosis of spontaneous intracranial hypotension remains a problem, despite increasing recognition.
METHODS
Three patients with spontaneous intracranial hypotension presented with typical findings on lumbar puncture, magnetic resonance (MR) imaging, and radioisotope cisternography. All patients showed subdural effusions in the posterior fossa on axial T2-weighted MR imaging. Axial MR images of 112 patients with other conditions were also screened for this finding.
RESULTS
One of three patients had typical orthostatic headache, and the other two had continuous headache. The finding of subdural effusions in the posterior fossa on axial T2-weighted MR imaging disappeared after treatment. Similar findings were found in 14 of 112 patients with other conditions. Most of the patients were over 60 years old or had dementia or previous radiation therapy.
CONCLUSIONS
Subdural effusions in the posterior fossa can be identified by T2-weighted axial MR imaging, and are useful for the diagnosis of spontaneous intracranial hypotension and for verifying the effectiveness of treatment.
背景
尽管对自发性颅内低压的认识不断提高，但误诊问题依然存在。
方法
三名自发性颅内低压患者在腰椎穿刺、磁共振（MR）成像和放射性核素脑池造影检查中呈现出典型表现。所有患者在轴向T2加权MR成像上均显示后颅窝硬膜下积液。对112例患有其他病症的患者的轴向MR图像也进行了此项发现的筛查。
结果
三名患者中有一名有典型的体位性头痛，另外两名有持续性头痛。轴向T2加权MR成像上后颅窝硬膜下积液的表现经治疗后消失。在112例患有其他病症的患者中，有14例也发现了类似表现。大多数患者年龄超过60岁或患有痴呆症或曾接受过放射治疗。
结论
后颅窝硬膜下积液可通过轴向T2加权MR成像识别，对自发性颅内低压的诊断及治疗效果验证均有帮助。
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