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Two Cases of Intralabyrinthine Schwannoma
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Abstract
Intralabyrinthine schwannoma is a rare tumor that arises from the distal portion of either the vestibular or cochlear nerve. Consequently, the cochlear, the semicircular canals, the vestibule, or a combination of these structures may become involved. Clinically, intralabyrinthine schwannoma mimics the clinical features of many other neurotologic conditions that might be often misdiagnosed as Meneres disease, sudden deaf and so on. Therefore, a high index of suspicion and precise imaging are often required to detect this tumor. We report two cases of intralabyrinthine schwannomas which was diagnosed with high resolution, gadolinium-enhanced magnetic resonance imaging (MRI) and removed by transmastoid labyrinthectomy. (Korean J Otolaryngol 2006;49:434-8)
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