Presentation
Bilateral sensorineural hearing loss. Preoperative imaging before cochlear implantation.
Patient Data
Age: 3 years
Gender: Male
From the case:
Congenital bifurcation of the intratemporal facial nerve
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There are bilateral bifurcations of the labyrinthine segments of the left facial nerve and trifurcations of the mastoid segment of the right facial nerve. Bilateral stenoses of cochlear nerve canals. Incomplete partition of the left cochlea (type II).
From the case:
Congenital bifurcation of the intratemporal facial nerve
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Bifurcation of the labyrinthine and trifurcations of the mastoid segment of facial nerve. Cochlear nerve canal is stenotic. Cochlear nerve is absent.
Case Discussion
Facial nerve bifurcations are rare anomalies which can involve all segments of the nerve. The most common occur in the tympanic segment 1.
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