Schwannoma of the facial nerve and its branches in the middle ear: A report of 3 cases and literature review

Abstract

The facial nerve schwannoma (SNF) is a rare tumor, however it is the most common tumor of the facial nerve. They are slow-growing benign tumors that produce non-speci- fic otologic symptoms and may be associated facial paralysis. There are no preoperative tests that allow us to accurately diagnose the SNF. The study of choice is made with high resolution CT and MRI with gadolinium. Definitive diagnosis is histopathological but the physician may make a presumptive diagnosis if clinical images and intraope- rative findings are consistent. The goal of treatment should try to preserve facial nerve function for as long as possible. In cases of asymptomatic patients, without facial nerve involvement, observation is prefered. Cases of schwannomas of intratympanic facial and chorda tympani are presented in this article.