Prevalence of radiographic semicircular canal dehiscence in very young children: an evaluation using high-resolution computed tomography of the temporal bones.

Background: Previous studies suggest that semicircular canal dehiscences (SCDs) have a developmental origin.

Objective: We hypothesized that if SCDs originate during development, incidence of radiographic SCDs in young children will be higher than in adults.

Materials And Methods: Thirty-four temporal bone HRCTs of children younger than 2 years and 40 temporal bone HRCTs of patients older than 18 years were reformatted and re-evaluated for presence of SCD or canal thinning.

Sudden sensorineural hearing loss: a review of diagnosis, treatment, and prognosis.

Sudden sensorineural hearing loss (SSNHL) is commonly encountered in audiologic and otolaryngologic practice. SSNHL is most commonly defined as sensorineural hearing loss of 30 dB or greater over at least three contiguous audiometric frequencies occurring within a 72-hr period. Although the differential for SSNHL is vast, for the majority of patients an etiologic factor is not identified.