Clinical Study

Copyright © 2013 Konstantinos Violaris et al. is is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Aim. To evaluate the frequency of atypical and malignant meningiomas and analyze recurrence rate; to study the morbidity and mortality of these tumors compared to benign meningiomas. Methods. During 1992–2007, 16 patients with malignant and 16 patients with atypical meningioma were operated in Neurosurgery Department of essaloniki’s Papanikolaou Hospital. We analyzed tumor histology, location, and extent of surgical resection with respect to tumor reappearance and patients ’ outcome and compared the behavior of benign versus nonbenign meningiomas. Results. Malignant meningiomas accounted for 4.4 % (16 patients) and atypical meningiomas for another 4.4 % of the series of patients (353) who were operated for intracranial meningioma at our department that period. Malignant meningiomas recurred at a rate of 75 % and atypical meningiomas recurred at a rate of 41.6%. ere was a signi�cant association of the histological classi�cation (benign, atypical, and malignant) with recurrence