Factors affecting post-operative recurrence or growth of meningiomas, other than histological grade and extent of resection

Meningiomas are one of the commonest primary brain tumours, treated primarily with surgery. These are extraaxial tumours and their post-operative recurrence rates have been extensively studied. The most established predictor of meningioma recurrence is the WHO grade (based on histological features) and the Simpson grade, based on the extent of resection. In this review article, we look into the risk factors other than histological grade and Simpson grade that have been associated with recurrence of meningioma after resection.