Table 1 Simpson grading for Meningioma
Radical | |
|---|---|
Stage 1 | complete excision, including dura and bone |
Stage 2 | complete excision + supposed reliable coagulation of dural attachment. |
Non-radical | |
Stage 3 | complete excision but insufficient dural coagulation or bone excision (non visible on MR, according to surgeon's opinion) |
Stage 4 | incomplete excision, macroscopic rest visible (on MRI) |
Stage 5 | biopsy only (visible on MRI) |