Prevalence of Endolymphatic Hydrops With a Hitory of Congenital Cytomegalovirus Infection

Inclusion Criteria: * Patient over 6 months old * With a history of confirmed congenital CMV infection * Suffering from symptomatic cochleo-vestibular dysfunction (average hearing threshold\> 20dB in at least one ear and / or abnormal functioning of one or more sectors at the vestibular level) * For adult patients, having received informed information about the study and having signed a consent to participate in the study * For minor patients written consent of the two holders of the exercise of parental authority * Affiliate or beneficiary of a social security scheme Exclusion Criteria: * Patient benefiting from a legal protection measure * Pregnant or breastfeeding woman * Contraindication to MRI (implanted electrical device, metallic foreign body, claustrophobia) * Patient with a proven allergy to gadolinium * Injection of gadolinium in the previous 7 days * Known impairment of renal function ((estimated GFR \<60 mL / min / 1.73 m²)