Major-nerve schwannomas versus intramuscular schwannomas
Acta Radiologica 48 巻 6 号
672-677 頁
2007 発行
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| ファイル情報(添付) | |
| タイトル ( eng ) |
Major-nerve schwannomas versus intramuscular schwannomas
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| 作成者 |
Shimose Shoji
Sugita Takashi
Nobuto Hiroo
Tanaka Kumi
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| 収録物名 |
Acta Radiologica
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| 巻 | 48 |
| 号 | 6 |
| 開始ページ | 672 |
| 終了ページ | 677 |
| 抄録 |
Background: A schwannoma is a benign peripheral nerve tumor. Predicting the involvement of a nerve on symptoms or MR findings is crucial to the diagnostic process. Purpose: To compare symptoms, MR findings, and histological findings between major nerve schwannomas and intramuscular schwannomas. Material and Methods: Thirty-four patients with 36 schwannomas (29 major nerve schwannomas and 7 intramuscular schwannomas) surgically excised and proven histologically were retrospectively reviewed. Results: Frequencies of the Tinel - like sign, split-fat sign, entering and exiting nerve, and low-signal margin indicate the presence of the nerve and were significantly higher in major nerve schwannomas than in intramuscular schwannomas. In tumor morphological patterns (the target sign, inhomogeneous pattern, and homogeneous pattern), there were no significant differences between major nerve schwannomas and intramuscular schwannomas. Schwannomas showing the target sign histologically tended to be less degenerative. All major nerve schwannomas and 5 intramuscular schwannomas produce some characteristic symptoms and/or MR findings, but two intramuscular schwannomas didn't have any characteristic symptoms and findings. Conclusion: In major nerve schwannomas, the Tinel - like sign, split-fat sign, entering and exiting nerve, and low-signal margin are commonly observed and useful for diagnosis. In intramuscular schwannomas, these characteristic findings are less common, which makes diagnosis difficult.
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| 著者キーワード |
Schwannoma
Major nerve
Intramuscular
Target sign
MRI
Tinel-like sign
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| NDC分類 |
医学 [ 490 ]
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| 言語 |
英語
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| 資源タイプ | 学術雑誌論文 |
| 出版者 |
Informa Healthcare
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| 発行日 | 2007 |
| 権利情報 |
Copyright (c) 2007 Taylor & Francis.
This is an electronic version of an article published in "Acta Radiologica, Volume 48, Issue 6 (2007) pages 672 - 677" Natural Product Research is available at: http://dx.doi.org/10.1080/02841850701326925
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| 出版タイプ | Author’s Original（十分な品質であるとして、著者から正式な査読に提出される版） |
| アクセス権 | オープンアクセス |
| 収録物識別子 |
[ISSN] 0284-1851
[DOI] 10.1080/02841850701326925
[PMID] 17611877
[NCID] AA10668717
[DOI] http://dx.doi.org/10.1080/02841850701326925
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