• Carlos A. Mattozo
  • Antonio A. F. de Salles


Meningiomas are generally benign lesions that account for 15% to 20% of primary brain tumors, affect predominately middle-aged patients, and occur predominately in females [1], [2]. The atypical and malignant meningiomas are characterized by successive recurrences and an aggressive behavior. Among all meningiomas, their incidence varies in the literature ranging from 4.7% to 7.1% and 1.0% to 3.7% for atypical and malignant, respectively [3]–[6]. There is absence of female predominance in malignant meningiomas suggesting that endocrinologic influences apparently correlated with the genesis of benign meningiomas are not active in malignant ones [4].


Skull Base Radiat Oncol Biol Phys Cavernous Sinus Gamma Knife Stereotactic Radiosurgery 
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Copyright information

© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  • Carlos A. Mattozo
    • 1
  • Antonio A. F. de Salles
    • 1
  1. 1.Department of Surgery, Division of NeurosurgeryDavid Geffen School of Medicine at UCLALos AngelesUSA

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