Attempted Radical Removal of Parasagittal Meningioma: Risks and Benefits

Abstract

Parasagittal meningiomas (PSMs) are tumors arising at the convexity of the hemisphere, just off the midline and adjacent to the superior sagittal sinus (SSS), with no brain tissue between the tumor and the SSS. Falcine meningiomas are tumors arising from the falx cerebri below the superior sagittal sinus (SSS) in the interhemispheric fissure; it is often bilateral and concealed by the overlying cortex. They comprise approximately 19.5 to 45% of all intracranial meningiomas. Most parasagittal (falcine) meningiomas are benign tumors that can be cured with surgical treatment. The goal of parasagittal meningioma surgery is to remove as much of the lesion as possible and preserve patency of the venous structure.