The role of radiosurgery in the combined treatment of large vestibular schwannomas

Purpose. To optimize treatment tactics at large vestibular schwannoma (VS) based on stereotactic radiosurgery (SRS) results analysis and efficiency evaluation as the post-operative phase of combined treatment.Materials and methods. 22 patients with large VS, previously operated in 2010–20...

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Main Author: Oksana Zemskova
Format: Article
Language:English
Published: Romodanov Neurosurgery Institute 2015-06-01
Series:Ukrainian Neurosurgical Journal
Online Access:https://theunj.org/article/view/45300
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author Oksana Zemskova
author_facet Oksana Zemskova
author_sort Oksana Zemskova
collection DOAJ
description Purpose. To optimize treatment tactics at large vestibular schwannoma (VS) based on stereotactic radiosurgery (SRS) results analysis and efficiency evaluation as the post-operative phase of combined treatment.Materials and methods. 22 patients with large VS, previously operated in 2010–2014 were included in the study. SRS was performed using linear accelerator “Trilogy” (“Varian”, USA). Target irradiation size was in average was 8,617 cm3, prescribed dose (PD) — 12.54 Gy, the maximum dose — 14.3 Gy.Results. The observation period after SRS ranged from 7 to 48 months, on an average — 26.7 months. Monitoring included regular clinical and radiological examinations: for the first year of observation — every 3 months, further — every 6 months. In 18 patients in a period of 12 months the size of the irradiated HS decreased or remained unchanged in 78%, in 15 patients in a period of 24 months — 93%, and in all 5 patients in a period 36 months. After SRS neurological status improved in 45% patients, functional status (according to the Karnofsky scale) — in 26%.Conclusions. SRS as a post-operative phase of large VS combined treatment ensured control of tumor growth, improved patient’s functional state, reduced neurological deficits, minimized risk associated with cranial nerves dysfunction.
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spelling doaj.art-797d57f6fecd4c329730f86e0fc7343e2024-01-23T13:31:37ZengRomodanov Neurosurgery InstituteUkrainian Neurosurgical Journal2663-90842663-90922015-06-012646910.25305/unj.45300The role of radiosurgery in the combined treatment of large vestibular schwannomasOksana Zemskova0Department of Neuroradiology and Radioneurosurgery, Romodanov Neurosurgery Institute, Kiev, Ukraine Purpose. To optimize treatment tactics at large vestibular schwannoma (VS) based on stereotactic radiosurgery (SRS) results analysis and efficiency evaluation as the post-operative phase of combined treatment.Materials and methods. 22 patients with large VS, previously operated in 2010–2014 were included in the study. SRS was performed using linear accelerator “Trilogy” (“Varian”, USA). Target irradiation size was in average was 8,617 cm3, prescribed dose (PD) — 12.54 Gy, the maximum dose — 14.3 Gy.Results. The observation period after SRS ranged from 7 to 48 months, on an average — 26.7 months. Monitoring included regular clinical and radiological examinations: for the first year of observation — every 3 months, further — every 6 months. In 18 patients in a period of 12 months the size of the irradiated HS decreased or remained unchanged in 78%, in 15 patients in a period of 24 months — 93%, and in all 5 patients in a period 36 months. After SRS neurological status improved in 45% patients, functional status (according to the Karnofsky scale) — in 26%.Conclusions. SRS as a post-operative phase of large VS combined treatment ensured control of tumor growth, improved patient’s functional state, reduced neurological deficits, minimized risk associated with cranial nerves dysfunction.https://theunj.org/article/view/45300
spellingShingle Oksana Zemskova
The role of radiosurgery in the combined treatment of large vestibular schwannomas
Ukrainian Neurosurgical Journal
title The role of radiosurgery in the combined treatment of large vestibular schwannomas
title_full The role of radiosurgery in the combined treatment of large vestibular schwannomas
title_fullStr The role of radiosurgery in the combined treatment of large vestibular schwannomas
title_full_unstemmed The role of radiosurgery in the combined treatment of large vestibular schwannomas
title_short The role of radiosurgery in the combined treatment of large vestibular schwannomas
title_sort role of radiosurgery in the combined treatment of large vestibular schwannomas
url https://theunj.org/article/view/45300
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