A rare case of uneventful pregnancy in a woman with Cogan's syndrome.

Cogan's syndrome is a rare multisystem disorder of unknown etiology which is characterized by nonsyphilitic interstitial keratitis, vestibuloauditory dysfunction and systemic vasculitis. We present the clinical manifestations and the follow-up of a 39-year-old pregnant woman with Cogan's syndrome. The treatment and especially the histologic findings of the placenta are discussed.