Tumors of the meninges are primary tumors that originate in meningothelial cells or non-meningothelial mesenchymal cells. The different types of existing tumors are determined by the appearance of the neoplastic cells in the microscope. 2.- Etiology: Unknown. 3.- Pathophysiology: The presence of the tumor in the intracranial level produces an imbalance of the compartments of the intracranial content, that is of the blood volume and the CSF, producing endocanean hypertension. The symptoms and signs presented are related to the topography of the lesion.4.- Epidemiology: Tumors of intracranial meninges account for 10% -15% of all primary intracranial tumors. There are no known epidemiological factors.