All of the following are true about this brain tumor except:

Meningioma (showing dural tail) Mostly occur along the superior sagittal sinus Most common intracranial, extra-axial dural-based neoplasm Associated with spasticity & lower limb weakness, sensory deficit and sphincter dysfunction of bladder Calcification is seen in 20-25% cases Simpson grading system is used for meningioma resection