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In this article, we conducted a literature review of articles on vestibular schwannomas, the development of its complications after microsurgical removal in the form of herpetic lesions. It includes data on the ways that herpes viruses can affect the human body, also about the presence of the virus in the tissues of the vestibular schwannomas and reactivation of herpes viruses after the surgery, which can cause neurological deficiencies such as facial nerve paresis and the appearance of herpetic eruptions along the innervated trigeminal, facial nerve. [ABSTRACT FROM AUTHOR]

Introduction. Operation in cerebello-pontine angle (CPA) region is one of the most difficult operations and this is because of anatomic features of this region. Maintenance of integration of cerebral nerves (CN) during operation in this region is one of the most important criteria of such operation. Taking into account the relevance of the problem: reduction of frequency of post-operation neurologic impairments, importance of maintenance of integration of nervous structures - there is a necessity of using intra-operative neuromonitoring (IONM). Methods. There were 90 patients with CPA onco- mas operated on in our Center in 2014, IONM during operation was applied for 60 of these patients. We have performed retrospective analysis of frequency of postoperative complications with IONM and without IONM. Results. Operations without using of IONM indicated that 23 patients (76,6%) as the result had severe slits of facial nerve (House Braakman 4, 5, 6 levels) and 3 patients (10%) had bulbar abnormality. And conversely, in the groups the IONM was used the index was lower: 9 patients (29,9%) had dysfunction of facial nerve (House Braakman 4,5,6 levels) and 1 patient (3,33%) had dysfunction of bulbar nerve. As well as practicing the IONM increased the number of operations with total removal of tumors 43% and in the group monitoring wasn't used opportunity of total removal was only 16%. Conclusion. Application of IONM during operations in CPA region improves the results of surgical treatment and also reduces the risk of development of postoperative dysfunctions of CN. [ABSTRACT FROM AUTHOR]