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Primary cholesterol cyst in the petrous bone Miki Yamamoto 1 1Department of Otolaryngology-Head & Neck Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences pp.227-231
Published Date 2008/3/20
DOI https://doi.org/10.11477/mf.1411101221
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 We report a case of 34-year-old female with primary cholesterol cyst in the petrous bone. She complained of right tinnitus and fluctuating sensorineural hearing loss. MRI and CT revealed a mass lesion with bone defect of the anterior and posterior semicircular canal in the right petrous bone. The transmastoid infralabyrinthine approach to the petrous apex was successful for adequate drainage with hearing preservation, and histological diagnosis was cholesterol cyst. The clinical features, radiological findings, and surgical approach are discussed.


Copyright © 2008, 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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