In line with this hypothesis, previous studies also suggested the existence of a relationship between NF2 gene mutations and the histology of meningiomas (e.g. transitional tumors [24]); however, this association remains controversial and in our series, the association between NF2 mutated and transitional meningiomas did not reach statistical significance, in line with the findings of several groups [7,8,21]. This evidence concerns the gene NF2 and Transitional Meningioma.