Document Detail

Diagnostic yield of MRI for audiovestibular dysfunction using contemporary referral criteria: correlation with presenting symptoms and impact on clinical management.
MedLine Citation:
PMID:  19103345     Owner:  NLM     Status:  MEDLINE    
AIM: To investigate the diagnostic yield of T2-weighted magnetic resonance imaging (MRI) screening for vestibular schwannoma and other relevant conditions in the setting of audiovestibular symptoms, given the more liberal contemporary referral criteria. To determine whether presenting clinical symptoms correlate with imaging outcome in order to guide future protocols for MRI referral. MATERIALS AND METHODS: Eight hundred and eighty-one consecutive MRI examinations performed in patients with audiovestibular dysfunction were reviewed. Clinical indications and findings were recorded. Case notes were reviewed in patients with positive imaging findings. Two-way, cross-tabulation, Chi-square analysis was performed to assess the relationship between presenting symptoms and imaging outcome. RESULTS: Twelve of the 881 (1.4%) were positive for vestibular schwannoma. A further four of 881 (0.4%) revealed other relevant conditions. Incidental conditions, felt to be irrelevant to the presenting symptoms, were noted in 12 of the 881 (1.4%). In all 12 cases that were positive for vestibular schwannoma, either tinnitus or hearing loss was present. CONCLUSION: The yield for T2-weighted MRI to diagnose vestibular schwannoma and other relevant retrocochlear conditions was lower than for previous studies, which is likely to reflect trends in referral criteria. No single audiovestibular symptom or combination of symptoms is a statistically significant predictor of imaging outcome.
C Vandervelde; S E J Connor
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Publication Detail:
Type:  Evaluation Studies; Journal Article     Date:  2008-09-25
Journal Detail:
Title:  Clinical radiology     Volume:  64     ISSN:  1365-229X     ISO Abbreviation:  Clin Radiol     Publication Date:  2009 Feb 
Date Detail:
Created Date:  2008-12-23     Completed Date:  2009-02-02     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  1306016     Medline TA:  Clin Radiol     Country:  England    
Other Details:
Languages:  eng     Pagination:  156-63     Citation Subset:  IM    
Department of Radiology, Guy's & St Thomas' NHS Foundation Trust, London, United Kingdom.
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MeSH Terms
Audiometry / methods
Cerebellopontine Angle / pathology
Dizziness / etiology
Hearing Loss / etiology
Magnetic Resonance Imaging / methods
Neuroma, Acoustic / complications,  diagnosis*,  therapy
Referral and Consultation
Retrospective Studies
Tinnitus / etiology

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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