Neurological Surgery No Shinkei Geka Volume 33, Issue 6 (June 2005)
Japanese

Subfrontal Schwannoma : Case Report Nobukazu KOMORIBAYASHI 1 , Hiroshi ARAI 2 , Takamaro KOJO 1 , Chikara OBONAI 1 , Junichi WAKABAYASHI 3 , Akira OGAWA 2 1Department of Neurosurgery,Hakodate Goryokaku Hospital 2Department of Neurosurgery,Iwate Medical University School of Medicine 3Department of Pathology,Hakodate Goryokaku Hospital Keyword: schwannoma , subfrontal lesion pp.601-605
Published Date 2005/6/1
DOI https://doi.org/10.11477/mf.1436100086
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Schwannoma are benign, slowly growing nerve sheath tumors. They can arise from any peripheral nerve containing Schwann cells including distal portions of cranial nerves. Intracranial schwannomas arising from a subfrontal lesion are very rare. We report a case of subfrontal schwannoma in a 38-year-old woman who presented with seizures in February 2003. MRI features resembled an olfactory groove meningioma. The left carotid angiography revealed that the tumor was supplied from the anterior ethomoidal artery, but no remarkable tumor stain was detected. Bifrontal craniotomy with total excision of the tumor revealed a tumor in the left subfrontal lesion. The tumor was attached to the falx,the left frontal lobe, and the skull base, but those structures were not invaded. Unfortunately, we could not detect the left olfactory nerve. Subsequent histological examination proved that this tumor was schwannoma. A review of the literature found 27 cases including this case previously described. Arguments are raised that schwannomas in a subfrontal lesion are comparable to or even occur as intracranial schwannomas with frontal localization. Subfrontal schwannomas are very rare. For this reason they have not been diagnosed preoperatively. Further cases of subfrontal schwannoma are necessary to solve the enigma of the origin of this tumor.


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基本情報

03012603.33.6.jpg
Neurological Surgery 脳神経外科
33巻6号 (2005年6月)
電子版ISSN 1882-1251 印刷版ISSN 0301-2603 医学書院

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