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Epidermoid and Cystic Tumors in the Petrous Bone Hajime Ohtaki 1 1Department of Otolaryngology, Niigata University pp.1025-1029
Published Date 1993/12/20
DOI https://doi.org/10.11477/mf.1411900845
  • Abstract
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Case 1: A 35-year-old man presented with a long history of slowly progressed left hearing loss and recent facial paralysis. A large epidermoid tumor associated with a left petrous bone defect was detected by CT and MRI.

Case 2: An 18-year-old woman presented with a fluctuating bilateral hearing loss and right facial paralysis. CT showed bilateral petrous bone defects and MRI revealed a cystic tumor in each side.

Epidermoid tumor in case 1 and the right cystic tumor in case 2 were removed by trans-middle cranial fossa approach and trans-posterior cranial fossa approach, respectively.

The usefulness of CT and MRI images in eva-luating petrous bone lesions was confirmed.


Copyright © 1993, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1316 印刷版ISSN 0914-3491 医学書院

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