Tumor size (TED) | 0–4 points |
< 2 cm | 1 |
2 cm to 3.9 cm | 2 |
4 cm to 5.9 cm | 3 |
> 5.9 cm | 4 |
Tumor sites | 1 point each |
Upper clivus | |
Middle clivus | |
Lower clivus | |
Left petrous bone | |
Right petrous bone | |
Left cavernous sinus | |
Right cavernous sinus | |
C1/2/3 left | |
C1/2/3 right | |
Vascular involvement | 1 point each |
Left carotid artery | |
Right carotid artery | |
Basilar artery | |
Left vertebral artery | |
Right vertebral artery | |
Intradural invasion | 0–2 points |
No | 0 |
Slight | 1 |
With brainstem compression | 2 |
Recurrence after prior treatment | 0–5 points |
No | 0 |
After surgery | 2 |
After RT | 3 |
After Surgery and RT | 5 |