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Bifid Facial Nerve with Dual Origin Identified During Resection of Vestibular Schwannoma.
Harley, Benjamin; Rosenfeld, Jeffrey V; Cousins, Vincent.
Affiliation
  • Harley B; Department of Neurosurgery, Alfred Hospital, Melbourne, Victoria, Australia. Electronic address: b.harley@alfred.org.au.
  • Rosenfeld JV; Department of Neurosurgery, Alfred Hospital, Melbourne, Victoria, Australia; Department of Surgery, Monash University, Melbourne, Victoria, Australia.
  • Cousins V; Department of Surgery, Monash University, Melbourne, Victoria, Australia; Department of Otolaryngology, Alfred Hospital, Melbourne, Victoria, Australia.
World Neurosurg ; 132: 375-376, 2019 Dec.
Article in En | MEDLINE | ID: mdl-31493615
ABSTRACT
Facial nerve identification and preservation is a critical step in the resection of vestibular schwannoma. The use of intraoperative neurostimulation to positively identify the facial nerve along its entire course is essential to prevent injury. To our knowledge, this is the first reported case of a bifid facial nerve with a dual origin at the brainstem, which we observed during resection of vestibular schwannoma via the translabyrinthine approach. Both roots were visualized to join as one facial nerve trunk outside the brainstem in the cisternal segment of the facial nerve, and both trunks demonstrated positive signal with neurostimulation. This case highlights an important anatomic variation and also the importance of correct identification of facial nerve anatomy during resection of vestibular schwannoma and other pathologies within the cerebellopontine angle.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Neuroma, Acoustic / Neurosurgical Procedures / Facial Nerve Type of study: Prognostic_studies Limits: Humans / Male / Middle aged Language: En Journal: World Neurosurg Journal subject: NEUROCIRURGIA Year: 2019 Document type: Article

Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Neuroma, Acoustic / Neurosurgical Procedures / Facial Nerve Type of study: Prognostic_studies Limits: Humans / Male / Middle aged Language: En Journal: World Neurosurg Journal subject: NEUROCIRURGIA Year: 2019 Document type: Article