Neurologia medico-chirurgica
Online ISSN : 1349-8029
Print ISSN : 0470-8105
ISSN-L : 0470-8105
Case Reports
Surgical Removal of Chondroma of the Petrous Apex Resulting in Hearing Improvement
—Case Report—
Tetsuro SAMESHIMA, Rokuya TANIKAWA, Toshihide SUGIMURA, Naoto IZUMI, Toshitaka SEKI, Takahiro MAEDA, Toshiyuki TSUBOI, Masaaki HASHIMOTO, Tomofumi OSAWA, Teruo KIMURA, Kazuki NABESHIMA
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Keywords: chondroma, petrous apex, surgical removal, hearing improvement, differential diagnosis
JOURNAL OPEN ACCESS

2010 Volume 50 Issue 2 Pages 147-149

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Abstract

An 18-year-old male presented with a chondroma in the petrous apex manifesting as major complaints of headaches and sensorineural hearing disturbance on the right. Head computed tomography and magnetic resonance imaging revealed a neoplastic lesion in the right petrous apex, which had bulged to compress the internal auditory meatus. Surgical removal improved his hearing with normalization of the postoperative air conduction threshold by reduction of the pressure of the internal auditory meatus, suggesting that the function of the cochlea was retained and the tumor was compressing the cochleal nerve at the level of the internal auditory meatus. Histological examination showed the tumor consisted of hyaline cartilage tissue without cellular atypia and the diagnosis was chondroma.

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© 2010 by The Japan Neurosurgical Society

This article is licensed under a Creative Commons [Attribution-NonCommercial-NoDerivatives 4.0 International] license.
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