Objective:
Meningiomas are the most common primary human intracranial tumors that account for 13-20 percentage of all central nerve system tumors. It arises from meningothelial cells. The apparent pathogenesis of meningioma is still unclear. In general, they are slow-growing tumors with benign behavior, but about 3 percent of meningiomas with malignant behavior. Along with the classification of the tumors of nervous system adopted by WHO, there are three types of meningiomas, benign (grade I) , at...