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Superselective Angiographic Findings of Ipsilateral Middle Meningeal Artery of Chronic Subdural Hematoma in Adults Teruhiko TANAKA 1 , Shunichi FUJIMOTO 1 , Kazuko SAITOH 1 , Shinya SATOH 1 , Kenichi NAGAMATSU 1 , Hiroshi MIDORIKAWA 2 1Departments of Neurosurgery, Aomori Prefectural Central Hospital 2Departments of Radiology, Aomori Prefectural Central Hospital Keyword: chronic subdural hematoma , superselective ipsilateral angiography of MMA , abnormal vascular networks by angiography , macrocapillary of outer membrane pp.339-347
Published Date 1998/4/10
DOI https://doi.org/10.11477/mf.1436901556

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  • Abstract
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The authors reported the results of continuous superselective angiography of the ipsilateral middlemeningeal artery (MMA) in cases of chronic subdural hematoma (CSH) in adults. MMA angiography wasperformed twice, at an interval of approximately two weeks, in 3 cases of conservative and 1 case of sur-gical treatment. The features of MMA angiographic findings were diffuse dilatation of MMA andvisualization of scattered abnormal vascular networks (VN), which seemed to be macrocapillaries in theouter membrane of the CSH. In two Out of the three cases of conservative treatment, these VN revealed adynamic change temporarily and spatially, i.e. either enlargement or reduction. In one case with a long cli-nical course a stable MMA angiogram was seen. The operated case showed dramatic change on thesecond (postoperative) MMA angiogram. The VN around burr hole portion was huge and dark, and sever-al newly visualized small arteries penetrated the enlarged VN, which was thought to have been caused bythe operation.

The mean blood pressure in the MMA was 103mmHg.

The reason for the acute enlargement of the CSH might be explained as arterial bleeding into the hema-toma cavity, caused by rupture of thin walled macrocapillaries by direct arterial pressure.


Copyright © 1998, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1251 印刷版ISSN 0301-2603 医学書院

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