An electrophysiological study on the safety of the endoscope-assisted microsurgical removal of vestibular schwannomas

European Journal of Surgical Oncology : the Journal of the European Society of Surgical Oncology and the British Association of Surgical Oncology
V M GerganovMadjid Samii

Abstract

Endoscopy is being increasingly used in skull base surgery. The issue of its safety, however, has not been definitely solved. We evaluated the risk of thermal or mechanical iatrogenic nerve injury related to endoscope application during microsurgical removal of vestibular schwannomas (VS) in a prospective group of 30 patients (Group A). Main analysed parameters were electrophysiological monitoring data (auditory evoked potentials and EMG) during and after endoscopic observation. The structural and functional preservation of facial and cochlear nerves, radicality of tumour removal, and CSF leak rate were evaluated and compared to historical group of 50 patients (Group B), operated consecutively with classical microsurgical technique. No electrophysiological changes directly related to endoscope were registered. The rate of loss of waves I, II, and V did not depend on application of endoscope and was similar in both groups. The functional and general outcome was also similar. Endoscopic inspection provided early and detailed view of anatomical relations within cerebellopontine angle and internal auditory canal and confirmed completeness of tumour removal. Total tumour removal was achieved in all patients from Group A and in 49/50...Continue Reading

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Citations

Feb 2, 2013·Journal of Neurological Surgery. Part B, Skull Base·Yoshiaki KumonTakanori Ohnishi
Sep 27, 2012·European Archives of Oto-rhino-laryngology : Official Journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : Affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery·Martin ChovanecJan Betka
Nov 29, 2011·World Neurosurgery·Salvatore Di MaioLaligam N Sekhar
Apr 25, 2015·Journal of Neurosurgery·Mohammad AbolfotohOssama Al-Mefty
Mar 5, 2013·Magnetic Resonance Imaging·Jehuda SolemanJavier Fandino
Nov 27, 2019·Neurosurgical Review·Francesco CorrivettiLuciano Mastronardi
Sep 13, 2021·Otology & Neurotology : Official Publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology·Saba Raza-KnightAndrew F Alalade

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