Wydawnictwo Medyczne Mediton
quarterly

Under the scientific patronage of

the Polish Society of Audiology and Phoniatrics

 

Original articles

« return
Superior semicircular canal dehiscence syndrome – a case report
Marek Zadrożniak 1/, Kamal Morshed 1/, Agnieszka Trojanowska 2/, Marcin Szymanski 1/
  • 1/ Klinika Otolaryngologii i Onkologii Laryngologicznej Uniwersytetu Medycznego w Lublinie
  • 2/ Zakład Radiologii Ogólnej Uniwersytetu Medycznego w Lublinie

Superior semicircular canal dehiscence into the floor of the middle fossa may cause a variety of symptoms, including vertigo, oscillopsia and nystagmus induced by loud sounds or by stimuli that change middle ear or intracranial pressure. Auditory manifestations include conductive hearing loss, autophony and increased sensitivity to bone-conducted sounds. The diagnosis is based on positive Tulio phenomenon, Hennebert sign, Valsalva maneuvers, tuning fork tests, pure tone audiometry, impedance audiometry, vestibular-evoked myogenic potentials (VEMP) and high resolution computed tomography scans. After middle fossa craniotomy and repair of the superior canal dehiscence by resurfacing or plugging procedure, the patient may get complete relief of symptoms. We report a case of a woman with bilateral superior semicircular canal dehiscences which caused mixed hearing loss and vestibular symptoms. Our patient did not agree to middle fossa craniotomy and plugging procedure, so we performed successful and effective BAHA implantation to restore hearing.

Otorynolaryngologia vol 10. no 4. Decemberpages: from 186to 190
full version