title: Cochlear implant magnet displacement during magnetic resonance imaging.
abstract: OBJECTIVE
  Magnet displacement is a rare but possible complication in patients with cochlear implants. We report 1 case in a young child that occurred during magnetic resonance imaging scanning, despite precautionary measures taken by the surgeon and the radiographer.
  
  
  METHODS
  Retrospective case report.
  
  
  METHODS
  This case is presented by the ENT Department of Armand Trousseau Paediatrics Hospital, Paris, France.
  
  
  METHODS
  An 8-year-old child, implanted with a Freedom Contour Nucleus cochlear implant, was referred for a 1.5-T cerebral magnetic resonance imaging because of a progressive neurologic disorder.
  
  
  CONCLUSIONS
  This rare complication underlines the importance of risk information and preventive measures required, even in case of compatible devices, for performing a magnetic resonance imaging examination in patients wearing a cochlear implant with removable magnet.
authors.affiliation: ENT Department-Hôpital d'Enfants Armand Trousseau, Paris, France. fdeneuve@clubinternet.fr
authors.forename: Sophie
authors.initials: S
authors.lastname: Deneuve
authors.forename: Nathalie
authors.initials: N
authors.lastname: Loundon
authors.forename: Nicolas
authors.initials: N
authors.lastname: Leboulanger
authors.forename: Isabelle
authors.initials: I
authors.lastname: Rouillon
authors.forename: Erea Noel
authors.initials: EN
authors.lastname: Garabedian
mesh_terms: D002648:Child; D003054:Cochlear Implants; D005548:Foreign-Body Migration / Q000209:etiology* / Q000601:surgery; D006319:Hearing Loss, Sensorineural / Q000175:diagnosis* / Q000601:surgery*; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000009:adverse effects*; D008280:Magnetics; D008297:Male