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Epithelial Cyst Occurring on the Anterior Surface of the Brain stem : Case Report and Review of the Literatures Hidehiro Hirabayashi 1 , Atsuo Okazaki 1 , Mitsutoshi Nakamura 1 , Shigeru Tsunoda 2 , Toshisuke Sakaki 2 1Department of Neurosurgery, Nara Prefectural Hospital 2Department of Neurosurgery, Nara Medical University Keyword: epithelial cyst , magnetic resonance image , posterior fossa pp.1035-1039
Published Date 1992/11/1
DOI https://doi.org/10.11477/mf.1406900411
  • Abstract
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Epithelial cysts in the posterior fossa are very rare, and only 22 cases have been reported in litera-tures. We report a case of epithelial cyst occurring on the anterior surface of the brain stem.

A 31-year-old man was admitted to our hospital complaining of right hemiparesis and dysarthria. Plain CT showed a heterogeneous (isodense - hyperdense) mass in front of the pons, and was not enhanced after injection of contrast medium. As for findings of MRI, the tumor revealed as heterogene-ous (isointense - hyperintense) mass on T1 -weight-ed image and also heterogeneous (hypointense - hyperintense) mass on T2-weighted image. We removed partially the tumor which content was like yogurt. The histological findings of the cyst wall revealed a pseudostratified columnar ciliated epithe-lium.


Copyright © 1992, 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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