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A bifid intra-tympanic facial nerve in association with a normal stapes

Published online by Cambridge University Press:  12 May 2006

J Ahmed
Affiliation:
Department of Otolaryngology, Charing Cross Hospital, London, UK
P Chatrath
Affiliation:
Department of Otolaryngology, Charing Cross Hospital, London, UK
J Harcourt
Affiliation:
Department of Otolaryngology, Charing Cross Hospital, London, UK
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Abstract

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A rare facial nerve anomaly was incidentally discovered whilst performing a tympanoplasty and ossicular reconstruction on a patient with an acquired unilateral conductive hearing loss. The nerve was seen to bifurcate and straddle a normal stapes superstructure as it ran posteriorly through the middle ear, a unique and as yet unreported combination. This case highlights the importance of vigilance regarding facial nerve anatomical variations encountered during middle-ear surgery thus avoiding inadvertent damage. The purported embryological mechanism responsible for such anomalies of the intra-tympanic facial nerve is discussed.

Type
Clinical Records
Copyright
© 2006 JLO (1984) Limited