Abstract
Meningiomas (MGMs) are the most common intracranial tumors and represent around 36% of all primary tumors. They can be classified in different grades: grade 1 (benign), grade 2 (atypical) and grade 3 (anaplastic), the latter the most aggressive. Symptoms are generally non-specific and recurrence rates for grades 1, 2 and 3 vary from 7-25%, 29-52% and 50-94%, respectively. Although it is c…