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A case of middle cranial fossa meningioma extending into the infratemporal fossa:an approach to the pterygoid extension of the sphenoid sinus via the infratemporal fossa Hiroshi NAKAGUCHI 1,4 , Ichiro SUZUKI 1 , Makoto TANIGUCHI 1 , Takaaki KIRINO 1 , Keiichi ICHIMURA 2 , Kenichi NIBU 2 , Atsushi YAMADA 3 , Akiyoshi KAJIKAWA 3 1Department of Neurosurgery Faculty of Medicine, University of Tokyo 2Department of Otolaryngology Faculty of Medicine, University of Tokyo 3Department of Plastic Surgery Faculty of Medicine, University of Tokyo Keyword: meningioma , infratemporal fossa , sphenoid sinus pp.643-648
Published Date 1996/7/10
DOI https://doi.org/10.11477/mf.1436901242
  • Abstract
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A case of middle cranial fossa meningioma extending into infratemporal fossa and the pterygoid process is presented. The patient had a sphenoid sinus extending inferolaterally into the pterygoid process, which is known as pterygoid extension of the sphenoid sinus. This type of variation of the sphenoid sinus allowed a safe and well-oriented approach to the pterygoid pro-cess via the infratemporal fossa. The tumor extending into the pterygoid process was removed successfully without damaging any surrounding structures, e.g. max-illary nerve or Vidian nerve. However, pterygoid exten-sion of the sinus is seen in only 40% of cases. There-fore, close preoperative examination with bone window CT scan is mandatory before employing this approach.


Copyright © 1996, 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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