**3. Classification**

The WHO classification of brain tumors is the most popular classification system according to the histological molecular genetics. According to the 2016 WHO classification of tumors of CNS, there are totally 16 meningioma subtypes (**Table 1**) [2]. Meningiomas can also be classified according to their site of origin, and this classification method allows physician to predict the presenting signs and symptoms associated (**Table 2**).


#### **Table 1.**

*2016 World Health Organization (WHO) classification of meningiomas.*


#### **Table 2.**

*Clinical presenting features according to location.*
