Intraoperative monitoring during surgery for hypoglossal schwannoma

Abstract A 54-year-old man presented with an intracranial schwannoma of the hypoglossal nerve between the medulla and the left hypoglossal canal. The condylar fossa approach was used with intra-operative electromyography (EMG) monitoring of the lower cranial nerves. The tumor was then removed carefu...

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Bibliographic Details
Published inJournal of clinical neuroscience Vol. 17; no. 8; pp. 1053 - 1056
Main Authors Ishikawa, Mami, Kusaka, Gen, Takashima, Kouichi, Kamochi, Haruna, Shinoda, Soji
Format Journal Article
LanguageEnglish
Published Scotland Elsevier Ltd 01.08.2010
Subjects
Cranial Nerve Neoplasms - surgery
Electromyography
Evoked potential
Humans
Hypoglossal nerve
Hypoglossal Nerve - surgery
Hypoglossal Nerve Diseases - surgery
Male
Middle Aged
Monitoring, Intraoperative - methods
Neurilemmoma - surgery
Neurology
Operative monitoring
Schwannoma
Electromyography
Hypoglossal nerve
Evoked potential
Operative monitoring
Schwannoma
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Summary:Abstract A 54-year-old man presented with an intracranial schwannoma of the hypoglossal nerve between the medulla and the left hypoglossal canal. The condylar fossa approach was used with intra-operative electromyography (EMG) monitoring of the lower cranial nerves. The tumor was then removed carefully without decreasing the tongue EMG responses. EMG monitoring enabled us to remove the tumor while maintaining the function of the hypoglossal nerve. Tongue EMG was easily recorded by stimulating the hypoglossal nerve fibers, which was useful in identifying the hypoglossal nerve and evaluating its function. This suggests that tongue EMG is a useful monitoring tool to enhance neurological outcome following removal of tumors in this region.
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ISSN:0967-5868
1532-2653
DOI:10.1016/j.jocn.2009.09.040