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Third window lesions of the inner ear: A pictorial review
Karl R Khandalavala1, James R Dornhoffer1, Paul J Farnsworth2
1Department of Otolaryngology, Head and Neck Surgery, Mayo Clinic, Rochester, MN, United States of America.
Purpose:
Radiographic review of pathologies that associate with third window syndrome.
Methods:
Case series and literature review.
Results:
Eight unique third window conditions are described and illustrated, including superior, lateral, and posterior semicircular canal dehiscence; carotid-cochlear, facial-cochlear, and internal auditory canal-cochlear dehiscence, labyrinthine erosion from endolymphatic sac tumor, and enlarged vestibular aqueduct.
Conclusion:
The present study highlights the characteristic imaging features and symptoms to differentiate third window pathologies for expedient diagnosis and management planning.
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