title: [Cogan syndrome or sarcoidosis?].
abstract: BACKGROUND
  The Cogan's syndrome is characterized by the association of vestibulo-auditory dysfunction, non syphilitic interstitial keratitis or another significant inflammatory eye lesion. Some authors consider this disease as a vasculitis, because it is frequently associated with systemic manifestations. Based on Cogan's diagnostic criteria, Cogan's syndrome may be part of other systemic diseases, as polyarteritis nodosa or Wegener's granulomatosis.
  
  
  METHODS
  We report the case of a patient who presented with a Cogan's syndrome and developed further sarcoidosis.
  
  
  CONCLUSIONS
  If Cogan's syndrome is characterized as systemic disease because of its association with aortitis or other vasculitis, on the other hand, clinical presentation may be part of many other systemic diseases.
mesh_terms: D003937:Diagnosis, Differential; D018450:Disease Progression; D006311:Hearing Disorders / Q000150:complications* / Q000175:diagnosis; D006801:Humans; D007634:Keratitis / Q000150:complications* / Q000175:diagnosis; D008297:Male; D008875:Middle Aged; D012507:Sarcoidosis / Q000175:diagnosis* / Q000209:etiology; D013577:Syndrome; D015837:Vestibular Diseases / Q000150:complications* / Q000175:diagnosis
vernacular_title: Syndrome de Cogan ou sarcoïdose?