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Surgery of AVM of the Inferior Medullary Velum by the Uvulotonsillar Approach—Advantage of Moving of the Cerebellar Tonsil:Technical Case Report Taku SHIGENO 1 , Junichiro KUMAI 1 , Masaru ENDO 1 , Shinji HOTTA 1 1Department of Neurosurgery, Kanto Rosai Hospital Keyword: AVM , fourth ventricle , cerebellar vermis , cerebellar tonsil , microsurgery pp.87-92
Published Date 2002/1/10
DOI https://doi.org/10.11477/mf.1436902155
  • Abstract
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An incidentally found arteriovenous malformation (AVM) of the inferior medullary velum behind the medulla was removed by the lateral approach to the fourth ventricle originally described by Seeger in 1980. A wide posterior fossa craniotomy was performed to move the cerebellar tonsil laterally with C-1 laminectomy. The tela chroidea and inferior medullary velum, the two main sheets of tissue that form the lower half of the roof of the fourth ventricle can be exposed by gently displacing the tonsils laterally without splitting the vermis. Both the cerebellomedullary and uvulotonsillar spaces were exposed.


Copyright © 2002, 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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