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  • Title: The risk of hearing loss in nongrowing, conservatively managed acoustic neuromas.
    Author: Warrick P, Bance M, Rutka J.
    Journal: Am J Otol; 1999 Nov; 20(6):758-62. PubMed ID: 10565721.
    Abstract:
    OBJECTIVE: To determine the risk of loss of useful hearing in the absence of tumor growth among patients undergoing conventional management of acoustic neuroma. SETTING: Tertiary referral center. STUDY DESIGN: Retrospective case review. PATIENTS: Ten patients (12 ears) were identified having a period of no tumor growth of at least 6 months (19.0+/-12.8 months), and for whom at least two audiograms were available in this period. INTERVENTIONS: None. MAIN OUTCOME MEASURES: Loss of useful hearing defined using 70% speech discrimination score (SDS) and 30 dB pure tone average (PTA) (70/30), or 50% SD and 50 dB PTA (50/50) criteria. RESULTS: Three of seven (43%) ears with useful hearing using the 70/30 rule and two of eight ears (25%) using the 50/50 rule lost this useful hearing. CONCLUSIONS: There is a significant risk of useful hearing loss with conservative management of nongrowing acoustic neuromas.
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