Complete restoration of auditory impairment in a pediatric case of Cogan's syndrome: report of a rare case with long-term follow-up and literature review.

Cogan's syndrome is characterized by interstitial keratitis, vestibular impairment and hearing loss, commonly bilateral. Many patients, especially children, experience a delay in proper diagnosis which may delay treatment and thus impact on prognosis of hearing restoration. Less than 10 pediatric cases of Cogan's syndrome have been reported in literature and only five of them were reported with long-term follow-up. We report an extremely rare pediatric case of Cogan's syndrome typical form with long-term follow-up and evaluation of hearing impairment. Cogan's syndrome must be familiar to otorhinolaryngologists, pediatricians and ophthalmologists because early diagnosis and rapid administration of the proper therapy increase the probability of recovering hearing loss.