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. 2006 Oct;29(4):293-6; discussion 296-7.
doi: 10.1007/s10143-006-0039-3. Epub 2006 Sep 5.

Clinical and radiological features related to the growth potential of meningioma

Hidetoshi Kasuya  1 , Osami Kubo, Masahiko Tanaka, Kosaku Amano, Koichi Kato, Tomokatsu Hori
Affiliations

Clinical and radiological features related to the growth potential of meningioma

Hidetoshi Kasuya et al. Neurosurg Rev. 2006 Oct.

Abstract

Clinical and radiological features that help predict the growth potential of meningioma would be beneficial. The purpose of this study is to clarify the characteristics related to proliferating potential using the MIB-1 staining index. We analyzed the relationship of MIB-1 staining indices to characteristics of 342 consecutive patients with meningioma surgically removed between 1995 and 2004 by logistic regression analysis. One hundred and forty-nine of the patients with meningioma were >or=60 in age; 89 male; 48 recurrent; 203 symptomatic; 157 at the skull base; 124 over 20 cm(3); 24 multiple; 136 with edema; 117 with calcification. The MIB-1 staining index in 56 of 296 grade I meningiomas in WHO classification was >or= 3.0; in 27 of 28 grade II; and in 17 of 18 grade III, respectively. Logistic regression analysis demonstrated that male (odds ratio [OR], 2.374, p=0.003), recurrence (OR, 7.574, p=0.0001), skull base (OR, 0.540, p=0.035), calcification (OR, 0.498, p=0.019) were independent risk factors for a high MIB-1 staining index (>or=3.0); age, symptomatic, volume, multiple, edema were not. Male, recurrence, non-skull base, absence of calcification are independent risk factors for a high proliferative potential. These should be taken into consideration when managing meningiomas.

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