Clin Exp Otorhinolaryngol.  2020 May;13(2):203-208. 10.21053/ceo.2019.01207.

Feasibility of Brachial Plexus Schwannoma Enucleation With Intraoperative Neuromonitoring

Affiliations
  • 1Department of Otorhinolaryngology-Head and Neck Surgery, SMG-SNU Boramae Medical Center, Seoul, Korea
  • 2Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Bundang Hospital, Seongnam, Korea

Abstract


Objectives
. To evaluate the feasibility of brachial plexus schwannoma enucleation under intraoperative neuromonitoring.
Methods
. Five patients who were treated for brachial plexus schwannoma under intraoperative neuromonitoring from 2008 to 2018 were included in this retrospective review. Neuromonitoring was performed with a 100-μV event threshold of the neuromonitoring system (NIM-2 or 3) at the deltoid, biceps brachii, triceps brachii, and brachioradialis muscles. Patient characteristics, tumor size and location, intraoperative neuromonitoring findings, and postoperative function were evaluated.
Results
. The intraoperative neuromonitoring findings were in accordance with the preoperative assessment of the included nerve root. Three patients had no postoperative morbidity, one patient had temporary paresthesia of the forearm for 2 months, and one patient mild loss of grip strength for 1 month.
Conclusion
. Intraoperative neuromonitoring of the arm and forearm muscles during enucleation of brachial plexus schwannoma promoted confident and successful surgery with minimal postoperative morbidity.

Keyword

Brachial Plexus; Schwannoma; Neurilemmoma; Enucleation; Neuromonitoring; Feasibility Study
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