A Case of Cochlear Implantation in Patient with Incomplete Partition Type III Inner Ear Anomaly / 대한이비인후과학회지

Among the inner ear anomalies, incomplete partition type III (IP III) is a rare finding. The X-linked deafness type 3 (DFN3), the most common type of X-linked hearing loss of its kind, results from mutations in the POU3F4 gene and accounts for -50% of all families carrying X-linked non-syndromic hearing loss. Pathognomonic temporal bone deformities, recently classified as IP III, have been associated with DFN3. We report a patient with IP III carrying a mutation in the POU3F4 gene who experienced cerebrospinal fluid gusher during and after cochlear implantation.