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Rapidly Growing Microcystic Meningioma of the Middle Fossa Floor

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Title: Rapidly Growing Microcystic Meningioma of the Middle Fossa Floor
Authors: Honda, Masaru / Baba, Shirou / Kaminogo, Makio / Tamaru, Naoe / Nagata, Izumi
Issue Date: 15-Jun-2005
Publisher: The Japan Neurosurgical Society / 日本脳神経外科学会
Citation: Neurologia medico-chirurgica, 45(6), pp.311-314; 2005
Abstract: A 74-year-old woman presented with a microcystic meningioma which manifested as mental disturbance. A rapidly growing tumor in the left middle fossa had not been detected by examination 10 months before. The tumor was remarkably enhanced by contrast medium on both computed tomography and magnetic resonance imaging and was associated with massive perifocal edema. Cerebral angiography revealed that the tumor was mainly fed by the left middle meningeal artery, which was embolized preoperatively. The tumor was completely removed and no postoperative adjuvant therapy was administered. The histological diagnosis was microcystic meningioma with many mitotic figures and a MIB-1 labeling index of 12.8%. Four months later, the tumor recurred and invaded the paranasal sinus. Focal irradiation successfully controlled further regrowth. This case suggests that microcystic meningioma may have aggressive features, and close observation is necessary even after gross total removal.
Keywords: microcystic meningioma / middle fossa floor / rapid growth
URI: http://hdl.handle.net/10069/23656
ISSN: 04708105
DOI: 10.2176/nmc.45.311
Relational Links: http://ci.nii.ac.jp/naid/110002320191/
Rights: 日本脳神経外科学会 / 本文データは学協会の許諾に基づきCiNiiから複製したものである
Type: Journal Article
Text Version: publisher
Appears in Collections:Articles in academic journal

Citable URI : http://hdl.handle.net/10069/23656

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