A narrow internal auditory canal with duplication in a patient with congenital sensorineural hearing loss.
A narrow internal auditory canal (IAC) with duplication is a rare anomaly of the temporal bone. It is associated with congenital sensorineural hearing loss. Aplasia or hypoplasia of the vestibulocochlear nerve may cause the hearing loss. We present an unusual case of an isolated narrow IAC with duplication that was detected by a CT scan. In this case, the IAC was divided by a bony septum into an empty stenotic inferoposterior portion and a large anterosuperior portion containing the facial nerve that was clearly delineated on MRI.
Baik
Hye Won
HW
Department of Radiology, Chung-Ang University Hospital, College of Medicine, Chung-Ang University, Seoul, Korea.
Yu
Hyeon
H
Kim
Kyung Soo
KS
Kim
Gi Hyeon
GH
D002648:Child; D007758:Ear, Inner / Q000002:abnormalities* / Q000000981:diagnostic imaging; D005260:Female; D006319:Hearing Loss, Sensorineural / Q000151:congenital*; D006801:Humans; D014057:Tomography, X-Ray Computed