巨大蛛网膜颗粒的磁共振成像，一种表现为硬脑膜静脉窦内肿块的正常变异。
MR of giant arachnoid granulation, a normal variant presenting as a mass within the dural venous sinus.
作者信息
Mamourian A C, Towfighi J
机构信息
Department of Radiology, Dartmouth-Hitchcock Medical Center, Lebanon, NH 03756, USA.
出版信息
AJNR Am J Neuroradiol. 1995 Apr;16(4 Suppl):901-4.
Abstract
We report three cases of masses within the cerebral dural venous sinuses shown with either MR or angiography. The dural venous sinuses of 10 patients without known venous disease were examined at autopsy. In two patients, three giant arachnoid granulations were identified. On the basis of the literature and our limited autopsy series, we suggest that these lesions identified at imaging are giant arachnoid granulations, normal variants of no known clinical significance.
摘要
我们报告了3例经磁共振成像（MR）或血管造影显示的大脑硬脑膜静脉窦内肿块。对10例无已知静脉疾病的患者的硬脑膜静脉窦进行了尸检。在2例患者中，发现了3个巨大的蛛网膜颗粒。基于文献和我们有限的尸检系列，我们认为影像学上发现的这些病变是巨大蛛网膜颗粒，是无已知临床意义的正常变异。
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