Journal
OTOLOGY & NEUROTOLOGY
Volume 33, Issue 8, Pages 1375-1379Publisher
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/MAO.0b013e318268d087
Keywords
Caloric function; Canal paresis; Endolymphatic hydrops; Magnetic resonance imaging; Meniere's disease
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Funding
- Federal German Ministry of Education and Research [01EO0901]
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Introduction: Canal paresis of the horizontal semicircular canal in Meniere's disease is a frequent finding. Endolymphatic hydrops is the single most characteristic morphologic finding in Meniere's disease. However, the relationship between endolymphatic hydrops and canal paresis is still not elucidated. Methods: We used magnetic resonance imaging to visualize herniation of parts of the vestibular membranous labyrinth into the horizontal semicircular canal and correlated this morphologic feature with the caloric function of the horizontal semicircular canal. Results: Patients who showed herniation into the horizontal canal had a significantly impaired caloric function when compared with patients without this morphologic feature. Conclusion: Herniation into the semicircular canal may be the morphologic correlate for impaired caloric response in patients with Meniere's disease.
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