Late failure rate of hearing preservation after middle fossa approach for resection of XXXX .

@entity1 @entity5513 @entity5 @entity393
OBJECTIVE: To explore the long-term hearing results after a middle fossa approach for resection of @entity5513 . STUDY DESIGN: Retrospective case review. SETTING: Tertiary referral center. @entity1 : All @entity1 undergoing a middle fossa approach for resection of @entity5513 at a single institution with intent to preserve hearing between December 1989 and December 2009 were included in the study population. INTERVENTIONS: Standard middle fossa approach for resection of @entity5513 , magnetic resonance imaging (MRI), and audiogram. MAIN OUTCOME MEASURES: Recurrence of @entity5 as evaluated by MRI and hearing results as measured by serial audiograms. RESULTS: Seventy-eight @entity1 were identified who met study criteria. Fifty-one (65%) of the 78 @entity1 had usable hearing (American Academy of Otolaryngology-Head and Neck Surgery [AAO-HNS] class A or B) postoperatively. Forty-four @entity1 with successful hearing preservation had follow-up beyond their initial postoperative visit. Five (11%) of the 44 @entity1 showed late degradation to nonserviceable hearing (AAO-HNS class C or D) over a mean follow-up of 4.0 years. Kaplan-Meier estimate of preservation of class A or B hearing at 10 years was 72%. Of the five @entity1 with late degradation in hearing, 2 were found to have recurrences of their original @entity5 on MRI. There were 5 confirmed recurrences in the total study population. CONCLUSION: Late degradation of hearing was an infrequent occurrence after initially successful hearing preservation. When @entity393 did occur, there seemed to be a correlation with @entity5 recurrence.
