Internal auditory canalessions: epidemiology, histology and differencial diagnostics (literature review)

This article analyzes the literature related to the internal auditory canal (IAC) pathology. The data of epidemiology, histological characteristics, MR and CT scans patterns in diagnosing are presented. All pathology of the IAC is divided into 2 large groups: 1) pathology arising from the structures of the IAC; 2) other pathology arising from the surrounding structures of the IAC (middle ear, middle or posterior cranial fosses). Special attention is paid to vestibular schwannoma, cholesteatoma, meningioma, paraganglioma, osteoma, lipochoristoma – IAC lesions identified in the clinical experience of the Otology and Skull Base Pathology Department of the Scientific and Clinical Center of Otorhinolaryngology; the surgical management and the results treatment will be presented in a separate clinical study.