OBJECTIVE: This study aimed to clarify the pathophysiology involved in the cause of @entity393 due to @entity5513 ( @entity5513 ) with electrocochleograph (ECoG). STUDY DESIGN: The study design was a retrospective case study. SETTING: This study was conducted in a tertiary referral center. @entity1 : Thirty-four @entity1 diagnosed as having @entity5513 by magnetic resonance imaging between 1988 and 1995. INTERVENTION: Diagnostic. MAIN OUTCOME MEASURES: The authors made a comparison between the @entity1 ' ECoG findings and the size of their @entity5 as determined by magnetic resonance imaging and a pure-tone audiometry (PTA). The disparity between the threshold of @entity865 and the detective threshold of compound action potential (CAP) or that of the @entity18129 ( @entity18129 ) was calculated. When the threshold of the PTA was worse than the detective threshold of the CAP or the @entity18129 , the disparity was regarded as indicating a @entity393 of retrocochlear origin. RESULTS: There was no correlation found between @entity5 size and the detective threshold of CAP or @entity18129 . Disparity was found to correlate with @entity5 size. CONCLUSIONS: These findings seem to indicate that @entity16 in @entity5513 increases parallel to the growth of the @entity5 and that @entity16 can be detected by the ECoG before surgery.

Electrocochleographic evaluation of XXXX in @entity5513 .

@entity1 :: ('9606', 'Species') :: ['patients', 'PATIENT'] @entity5513 :: ('MESH:D009464', 'Disease') :: ['acoustic neuromas', 'AN'] @entity5 :: ('MESH:D009369', 'Disease') :: ['tumor', 'tumors'] @entity16 :: ('MESH:D009422', 'Disease') :: ['retrocochlear damage'] @entity865 :: ('CHEBI:61432', 'Chemical') :: ['PTA'] @entity393 :: ('MESH:D034381', 'Disease') :: ['hearing loss', 'hearing impairment'] @entity18129 :: ('MESH:D015834', 'Disease') :: ['CM', 'cochlear microphonics']
@entity393 :: (MESH:D034381,Disease) :: ['hearing loss']
