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Clinical Analysis of Malignant Meningiomas Tadashi KOJIMA 1 , Shiro WAGA 1 , Hiroji ITOH 1 , Toshio MATSUBARA 1 , Yoshihiro KUGA 1 1Department of Neurosurgery, Mie University School of Medicine Keyword: Intracranial meningioma , Malignancy , Recurrence , Radiation therapy pp.939-946
Published Date 1990/10/10
DOI https://doi.org/10.11477/mf.1436900151
  • Abstract
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It seems generally accepted that meningiomas are be-nign tumors, and that malignant meningiomas are not common. The pathological criteria for judging whether meningiomas are malignant or not are controversial. Hemangiopericytic type, high cellularity, brain invasion, high mitotic rate, necrotic foci, and papillary type areregarded as histological characteristics of malignant meningiomas. Of a series of 105 patients with surgically treated meningioma, 25 patients demonstrated malig-nant characteristics (24%). The overall recurrence rate in our patients was 14%.


Copyright © 1990, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1251 印刷版ISSN 0301-2603 医学書院

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