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ARACHNOID CYST OF THE QUADRIGEMINAL CISTERN : A CASE REPORT AND ITS CLINICAL ANALYSIS BASED ON THE PUBLISHED CASES Takashi Hayashi 1 , Akihiko Kuratomi 1 , Hiromichi Fukuda 1 , Seikichi In 1 , Shinken Kuramoto 1 1Department of Neurosurgery, Kurume University School of Medicine pp.87-95
Published Date 1980/1/1
DOI https://doi.org/10.11477/mf.1406204530
  • Abstract
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Intracraial arachnoid cyst may occur in every site where the arachnoid exists, and it can be seen in the middle fossa, convexity, interhemisphere, parasellar, paracollicular (incisural), cerebellopontine angle and retro cerebellar regions. There are two theoretical opinions about its pathogenesis. One is that an abnormal dilatation of the subarachnoid space coinciding with the defective space due to cerebal malformation occurs, which forms a cyst after its loculation (subarachnoid cyst). The other is that an intraarachnoid cyst is formed due to anomaly in systemic genetic process of the subara-chnoid space.

In this paper, the authers described a case report of an arachnoid cyst of the quadrigeminal cistern and clinical analysis of this disease based on twenty-five published cases since 1941.

As a result, the age of onset ranged between three weeks old and thirty-seven years old. Among twenty-five cases, twenty-two cases (88%) were under fifteen years old, and suckling cases could be seen in ten cases (40%). On clinical symptoms, intracranial hypertension syndrome such as enla-rged head, sunset eyes, headache, papilledema etc. because of hydrocephalus due to obstruction of the aqueduct by the cyst could be seen in all cases. Vertebral arteriogram revealed an increases distance between the distal segment of the posterior cerebral and superior cerebellar arteries. Moreover, forward and downward displacement of the cho-roidal loop of the posterior inferior cerebellar artery and the basilar artery being closer applied the clivus.

On CT cisternogram of our case, it was identified the communication between the cyst and its adjacent subarachnoid space, namely the finding showed filling into the cyst and delayed clearance from it.

Their clinical features and operative considera-tions were discussed.


Copyright © 1980, 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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