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Intratemporal Facial Nerve Schwannomas: A Review of 45 Cases in A Single Center

There are no established indications for facial nerve schwannoma treatment, including surgery, radiation and follow-up observation, and it is difficult to determine treatment policy uniformly. The treatment policy was examined from each treatment course. Data of patients with facial nerve schwannoma...

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Autores principales: Kitama, Tsubasa, Hosoya, Makoto, Noguchi, Masaru, Nishiyama, Takanori, Wakabayashi, Takeshi, Shimanuki, Marie N., Yazawa, Masaki, Inoue, Yasuhiro, Kanzaki, Jin, Ogawa, Kaoru, Oishi, Naoki
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9394418/
https://www.ncbi.nlm.nih.gov/pubmed/35892501
http://dx.doi.org/10.3390/diagnostics12081789
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author Kitama, Tsubasa
Hosoya, Makoto
Noguchi, Masaru
Nishiyama, Takanori
Wakabayashi, Takeshi
Shimanuki, Marie N.
Yazawa, Masaki
Inoue, Yasuhiro
Kanzaki, Jin
Ogawa, Kaoru
Oishi, Naoki
author_facet Kitama, Tsubasa
Hosoya, Makoto
Noguchi, Masaru
Nishiyama, Takanori
Wakabayashi, Takeshi
Shimanuki, Marie N.
Yazawa, Masaki
Inoue, Yasuhiro
Kanzaki, Jin
Ogawa, Kaoru
Oishi, Naoki
author_sort Kitama, Tsubasa
collection PubMed
description There are no established indications for facial nerve schwannoma treatment, including surgery, radiation and follow-up observation, and it is difficult to determine treatment policy uniformly. The treatment policy was examined from each treatment course. Data of patients with facial nerve schwannomas at our hospital from 1987 to 2018 were retrospectively examined. Their age, sex, clinical symptoms, tumor localization, treatment policies and outcomes were reviewed. In total, 22 patients underwent surgery and 1 patient underwent radiotherapy; 22 patients were followed up without treatment. After total resection, there were no tumor recurrences, and most patients had grade 3 or 4 postoperative facial paralysis. After subtotal resection, tumor regrowth was observed in four patients and reoperation was required in two patients. Facial nerve function was maintained in four patients and was decreased in two patients. During follow-up, six patients showed tumor growth. Only one patient had worsening facial nerve paralysis; four patients underwent facial nerve decompression owing to facial nerve paralysis during follow-up. If the tumor compresses the brain or it is prone to growth, surgery may be indicated, and when the preoperative facial nerve function is grade ≤ 3, consideration should be given to preserving facial nerve function and subtotal resection should be indicated. If the preoperative facial nerve function is grade ≥ 3, total resection with nerve grafting is an option to prevent regrowth. If there is no brain compression or tumor growth, the follow-up is a good indication, and decompression should be considered in facial nerve paralysis cases.
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spelling pubmed-93944182022-08-23 Intratemporal Facial Nerve Schwannomas: A Review of 45 Cases in A Single Center Kitama, Tsubasa Hosoya, Makoto Noguchi, Masaru Nishiyama, Takanori Wakabayashi, Takeshi Shimanuki, Marie N. Yazawa, Masaki Inoue, Yasuhiro Kanzaki, Jin Ogawa, Kaoru Oishi, Naoki Diagnostics (Basel) Article There are no established indications for facial nerve schwannoma treatment, including surgery, radiation and follow-up observation, and it is difficult to determine treatment policy uniformly. The treatment policy was examined from each treatment course. Data of patients with facial nerve schwannomas at our hospital from 1987 to 2018 were retrospectively examined. Their age, sex, clinical symptoms, tumor localization, treatment policies and outcomes were reviewed. In total, 22 patients underwent surgery and 1 patient underwent radiotherapy; 22 patients were followed up without treatment. After total resection, there were no tumor recurrences, and most patients had grade 3 or 4 postoperative facial paralysis. After subtotal resection, tumor regrowth was observed in four patients and reoperation was required in two patients. Facial nerve function was maintained in four patients and was decreased in two patients. During follow-up, six patients showed tumor growth. Only one patient had worsening facial nerve paralysis; four patients underwent facial nerve decompression owing to facial nerve paralysis during follow-up. If the tumor compresses the brain or it is prone to growth, surgery may be indicated, and when the preoperative facial nerve function is grade ≤ 3, consideration should be given to preserving facial nerve function and subtotal resection should be indicated. If the preoperative facial nerve function is grade ≥ 3, total resection with nerve grafting is an option to prevent regrowth. If there is no brain compression or tumor growth, the follow-up is a good indication, and decompression should be considered in facial nerve paralysis cases. MDPI 2022-07-23 /pmc/articles/PMC9394418/ /pubmed/35892501 http://dx.doi.org/10.3390/diagnostics12081789 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Kitama, Tsubasa
Hosoya, Makoto
Noguchi, Masaru
Nishiyama, Takanori
Wakabayashi, Takeshi
Shimanuki, Marie N.
Yazawa, Masaki
Inoue, Yasuhiro
Kanzaki, Jin
Ogawa, Kaoru
Oishi, Naoki
Intratemporal Facial Nerve Schwannomas: A Review of 45 Cases in A Single Center
title Intratemporal Facial Nerve Schwannomas: A Review of 45 Cases in A Single Center
title_full Intratemporal Facial Nerve Schwannomas: A Review of 45 Cases in A Single Center
title_fullStr Intratemporal Facial Nerve Schwannomas: A Review of 45 Cases in A Single Center
title_full_unstemmed Intratemporal Facial Nerve Schwannomas: A Review of 45 Cases in A Single Center
title_short Intratemporal Facial Nerve Schwannomas: A Review of 45 Cases in A Single Center
title_sort intratemporal facial nerve schwannomas: a review of 45 cases in a single center
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9394418/
https://www.ncbi.nlm.nih.gov/pubmed/35892501
http://dx.doi.org/10.3390/diagnostics12081789
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