Parasagittal and falx meningiomas
Sindou grading
Grading of meningioma invasion to SSS
- Type I - attachment to lat. wall of sinus.
- Type II - invasion of lat. recess.
- Type III - invasion of lat. wall.
- Type IV - invasion of lat. wall & roof.
- Type V - total sinus occlusion, contral. wall spared.
- Type VI - total sinus occlusion, invasion of all walls.