Koklear Apertür ve İnternal akustik Kanal ile Vestibülokoklear Sinir Varlığı Arasındaki İlişkinin Araştırılması

Abstract

The bony cochlear nerve canal (BCNC) is the bony canal space between the fundus of the internal auditory canal and the base of the cochlear modiolus that carries cochlear nerve fibers. BCNC and internal auditory canal (IAC) stenosis might be secondary to cochlear nerve aplasia or hypoplasia. To predict the situation of the cochlear nerve, some criterias are necessary in temporal bone computerized tomography (CT) scan. Generally, cochlear nerve aplasia or hypoplasia accompanies the BCNC stenosis. In our study our aim was to find out bony labyrinth anomalies and cochler nerve anomalies accompany BCNC stenosis 38 patients with 59 ears which has BCNC diamater less than 1.5 mm were included in the study. Patients with similar age group who have no sensorineural hearing loss and inner ear anomaly were included in the control group. BCNC and IAC diameters, cochlear malformation type if any,and accompanying vestibular anomalies were investigated.Situation of the cochlear nerve was determined.