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KMID : 0390220000110010133
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Journal of Clinical Otolaryngology, Head and Neck Surgery
2000 Volume.11 No. 1 p.133 ~ p.136
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11 Approaches to Petrous-Clivus via Partial Labyrintectomy for Hearing Preservation
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안중호/Joong Ho Ahn
이광선/윤태현/정종우/김창진/Tae Hyun Yoon/Jong Woo Chung/Kwang Sun Lee/Chang Jin Kim
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Abstract
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Background : Among many modalifies for treatment of petrous-clivus lesion, partial labyrinthectomy approach
is a method for hearing preservation. Objects and Methods : We reviewed 10 patients of skull base tumor and 1
patient of congenital cholesteatoma. Pure tone audiometry was checked before and 2 months after the surgery.
Results : The lesions treated included 6 petroclival meningiomas, 3 clivual neoplasms (2 meningioma and 1
cholesteatoma) and 2 Cerebellopontne angle neurogliomas. Sacrificed semicircular canals were 3 cases of
superior and lateral canals and 8 cases of superior and posterior canals. With exception of 4 cases of scale-out,
average bone conduction decreased from properative 21.2 dB to postoperative 50.4 dB. Average speech
discrimination score decreased to 32.7%. 2 cases preserved their serviveable hearing level. Conclusion : Partial
labyrinthectomy approach can be helpful for patients who want to maintain normal hearing level with further
modification and efforts.
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