Introduction: The Implantation of a cochlea Implant is performed routinely in children with labirynthine hearing loss. A serious complication is a local infection with succeeding meningitis. Because of this risk a successful cochlea Implant in children under immunosuppression has not been described yet.

Patient: A 4 year old boy with congenital kidneydysplasia has been successfully transplantated a kidney from his father with 2½ years. The postoperative course was uneventfull and the immunosuppression was performed with prednisolon, tacrolimus and MMF.

Course: The boy already had a profound hearing loss before the transplantation, probably due to recurrent otitis media and longterm furosemid use. After Transplantation first an improvement of the hearing was tried by the use of hearing devices. This attempt was ineffective and abandoned after one year. The Indication for a cochlea Implant was set and the operation was performed 20 months after the transplantation. After 14 months the postoperative course showed no complications.

Conclusion: Even after Transplantation the Implantation of a cochlea Implant is possible in children under Immunosuppression.