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

J Laryngol Otol. 2006 May;120(5):414-5. doi: 10.1017/S0022215106000570.

Abstract

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.

Publication types

  • Case Reports

MeSH terms

  • Facial Nerve / abnormalities*
  • Hearing Loss / pathology*
  • Hearing Loss / surgery
  • Humans
  • Middle Aged
  • Stapes / anatomy & histology*
  • Tympanic Membrane / pathology*
  • Tympanoplasty