Cystic Meningiomas: Report of Four Cases

Although intra cranial meningiomas are usually solid tumors, some are associated with confusing cysts. So, computedtomography scan and conventional magnetic resonance imaging may not easily differentiate these lesions from othertumors frequently associated with cystic or necrotic component as gliomas or metastasis.We report four cases of cystic meningioma in which the diagnosis was not suspected preoperatively because of short clinicalhistory and rapid neurological deterioration. However, a cystic component on imaging studies confused the diagnosis ofmeningioma with other cyst lesions.Although some authors report that hemorrhage is rare in meningioma, one of our cases was associated with hemorrhageand was histologically grade I meningioma. Total removal of cystic meningioma was our goal and histopathologicalexamination was important to establish the diagnosis after surgery