Cystic meningiomas, literature review and case reports: Nauta classification modification

Abstract

Meningiomas of central nervous system are common lesion, but among them, the cystic meningiomas are very rare tumours. We report two cases of cystic meningioma successfully treated, and we propose the modification of the widely used Nauta classification of cystic meningiomas. The clinical results depend on meticulous preoperative diagnosis and surgical planning, enhancing the utility of modification of Nauta classification by adding bone invasion.