Drilling and control of the internal auditory canal by fixed endoscope

Publication date: Available online 11 October 2018Source: European Annals of Otorhinolaryngology, Head and Neck DiseasesAuthor(s): X. Dubernard, J.-C. Kleiber, M. Makeieff, A. Bazin, A. ChaysAbstractPreservation of vestibular structures, particularly the posterior semicircular canal, is essential to ensure hearing preservation in addition to complete tumour resection during retrosigmoid surgical resection of a vestibular schwannoma. Drilling of the internal auditory canal (IAC) is a delicate step, during which these structures can be accidentally perforated. The orientation of the IAC results in the formation of poorly visible zones that can predispose to perforation of these structures when drilling is performed with a microscope. Hand-held endoscopy exposes all of the operative field, bu...

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