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Japanese

ARACHNOID CYSTS OF THE TEMPORAL REGION IN CHILDREN,: WITH SPECIAL REFERENCE TO THE NEURORADIOLOGICAL AND PATHOGENETIC CONSIDERATIONS Norihiko Tamaki 1 , Katsushi Taomoto 1 , Kiyoshi Fujiwara 1 , Masahiro Asada 1 , Yoshiro Obora 1 , Kunio Shirataki 1 , Seiya Shirakata 1 , Satoshi Matsumoto 1 1Department of Neurological Surgery, Kobe University School of Medicine pp.937-950
Published Date 1976/9/1
DOI https://doi.org/10.11477/mf.1406203945
  • Abstract
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Neuroradiological findings and pathogenesis of the arachnoid cysts of the temporal region in child-ren were presented and discussed. The palin skull x-ray examination showed bulging of the temporal region and enlargement of the middle fossa on the affected side. Angiographic findings were sum-marized as follows :

The anterior cerebral artery was in normal con-figuration and course. The typical findings were seen in the middle cerebral artery system. The middle cerebral artery and its branches were poorly developed. Each portion of the middle cerebral artery, such as sphenoid, insular, and opercular portions, was not fully formed. Sylvian triangle and fissure were, therefore, apastic or dysplastic. The arborization of the middle cere-bral artery was also poor. In the venous phase, the superficial middle cerebral vein, which drains the frontal, the parietal, and the temporal ope-culum, was absent. The deep middle cerebral veins, on the contrary, were well developed and drained the lateral surface of the cerebral mantle to enter the dilated and tortuous basal vein of Rosenthal. The vein of Labbé ran far posteriorly in the parieto-occipital region. The avascular area seen on the phlebogram was larger than that seen on the arteriogram.

These angiographic features described above cor-responded to the operative findings, which showed the aplasia of the frontal and the parietal operculum and the temporal lobe. The insula is, therefore, exposed on the external surface of the cerebral cortex. These pictures may be considered to be a syndrome of the developmental arrest of the cerebral mantle in fetal life.

We suggested that the circulatory disturbances in the telencephalic (superficial middle cerebral) veins from damming back or occlusion of the tentorial sinus during fetal life may be the main factor in the formation of the developmental arrest of the cerebral mantle.


Copyright © 1976, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 2185-405X 印刷版ISSN 0006-8969 医学書院

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