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Japanese

Meningioma of Petrous Bone Invaded into the Mastoid Antrum Shingo Murakami 1 1Department of Otolaryngology, Ehime Prefectural Central Hospital pp.803-808
Published Date 1990/10/5
DOI https://doi.org/10.11477/mf.1411900139
  • Abstract
  • Look Inside

A 56-year-old male developed a slowly progressed pulsating tinnitus, a hearing loss and incomplete facial palsy. X-ray examinations showed destruc-tion of the petrous bone. CT scan and MRI revealed a tumor shadow growing from petrous bone to the middle cranial fossa and mastoid antrum. The tumor was successfully removed by subtemporal and transmastoid approach technique, and was microscopically diagnosed as meningioma confirmed by transmission electron microscopy. The intratemporal facial nerve was removed with tumor, and its distal part was examined histolo-gically.

About 50% nerve fibers were damaged by tumor invasion, though facial palsy score was 32/40 clinically.


Copyright © 1990, 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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