Comparison of Clinical Characteristics and Surgical Outcomes of Cystic and Solid Vestibular Schwannomas.

Objective: The aim of this study was to compare the clinical characteristics of cystic vestibular schwannomas (CVSs) and solid vestibular schwannomas (SVSs).

Study Design: Retrospective review.

Setting: Tertiary care center.

Better surgical outcome by image-guided navigation system in endoscopic removal of sinonasal inverted papilloma.

Purpose: The purpose of this study was to validate and compare treatment outcomes for endoscopic resection of sinonasal inverted papilloma (IP) with or without the use of a navigation system.

Materials And Methods: A total of 58 patients who underwent endoscopic resection of sinonasal inverted papilloma by a single surgeon from 2007 to 2016 at our institution were retrospectively reviewed. Depending on the use of the navigation system, subjects were divided into two groups: a conventional endoscopic resection group without navigation system (CER group) and a navigation-assisted endoscopic resection group (NER group).