Auditory evoked potentials (AEP) - an important help in early dignosis of Schwannoma originating from vestibular nerve : case report (CROSBI ID 139311)
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Titlić, Marina ; Tonkić, Ante ; Jukić, Ivana ; Kolić, Krešimir ; Mihalj, Mario
engleski
Auditory evoked potentials (AEP) - an important help in early dignosis of Schwannoma originating from vestibular nerve : case report
Early diagnosis of expansive formations enables efficient therapy and maximal reduction of remaining neurological damage. Schwannma situated entirely withih the inner auditory canall with free pontocerebelar angle is a rather rare event. Of significant diagnostical help are auditory evoked potentials (AEP), computerised tomography (CT) of the temporal bone pyramid with measuring the inner auditory canal diameter, and magnetic resonance (MRI). In this paper we presenta case of a 56-year-old woman with gradually advancing noise in the right ear, weakening of hearing and occasional instabillity while walking. AEP register no evoked response at the right side, whereas at the left side the latencies and amplitudes of evoked acoustic responses are adequate. CT of the temporal bone pyramid shows a difference in the inner auditory canal diameters of 0.04 cm. MRI shows a Schwannoma tumorous formation in the inner auditory canal, situated entirely within the canal with free pontocerebellar angle.
Schwannoma ; n. VIII ; AEP ; CT ; MRI
PMID: 18447261
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