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Hearing eyeball and/or eyelid movements on the side of a unilateral superior semicircular canal dehiscence.

Authors
  • Bertholon, Pierre1
  • Reynard, Pierre2
  • Lelonge, Yann2
  • Peyron, Roland2
  • Vassal, François2
  • Karkas, Alexandre2
  • 1 Centre Hospitalier Universitaire de Saint Etienne, 42055, Saint Etienne cedex 2, France. [email protected] , (France)
  • 2 Centre Hospitalier Universitaire de Saint Etienne, 42055, Saint Etienne cedex 2, France. , (France)
Type
Published Article
Journal
European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery
Publication Date
Feb 01, 2018
Volume
275
Issue
2
Pages
629–635
Identifiers
DOI: 10.1007/s00405-017-4781-7
PMID: 29116385
Source
Medline
Keywords
License
Unknown

Abstract

Hearing of eyeball movements has been reported in superior semicircular canal dehiscence (SSCD), but not hearing of eyelid movements. Our main objective was to report the hearing of eyeball and/or eyelid movements in unilateral SSCD. Our secondary objective was to access its specificity to SSCD and discuss the underlying mechanism. Six patients with SSCD who could hear their eyeball and/or eyelid movements were retrospectively reviewed. With the aim of comparisons, eight patients with an enlarged vestibular aqueduct (EVA), who share the same mechanism of an abnormal third window, were questioned on their ability to hear their eyeball and/or eyelid movements. Three patients with SSCD could hear both their eyeball and eyelid movements as a soft low-pitch friction sound. Two patients with SSCD could hear only their eyelid movements, one of whom after the surgery of a traumatic chronic subdural hematoma. The latter remarked that every gently tapping on the skin covering the burr-hole was heard in his dehiscent ear as the sound produced when banging on a drum, in keeping with a direct transmission of the sound to the inner ear via the cerebrospinal fluid. One patient with SSCD, who could hear only his eyeball movements, had other disabling symptoms deserving operation through a middle fossa approach with an immediate relief of his symptoms. None of the eight patients with EVA could hear his/her eyeball or eyelid movements. Hearing of eyeball and/or eyelid movements is highly suggestive of a SSCD and do not seem to occur in EVA. In case of radiological SSCD, clinicians should search for hearing of eyeball and/or eyelid movements providing arguments for a symptomatic dehiscence. The underlying mechanism is discussed particularly the role of a cerebrospinal fluid transmission.

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