| | Score |
|---|
Volume |
1 | 1 |
2 | 2 |
3 | 3 |
Arterial involvement |
0 | 0 |
1 | 1 |
2 | 2 |
3 | 3 |
4 | 4 |
Cavernous sinus involvement |
No | 0 |
Yes | 2 |
Bone invasion |
No | 0 |
Yes | 1 |
- Volume: 1, volume < 20 cm3; 2, volume between 20 and 50 cm3; 3, volume > 50 cm3
- Arterial involvement: involvement of any artery was given one point, and an additional point was given for each of the following features: completely encircling (360°) the artery, involving more than one artery, and narrowing the lumen of the artery
- Cavernous sinus involvement: 0, tumor without cavernous sinus involvement; 2, tumor with cavernous sinus involvement
- Bone invasion: 0, tumor without bone invasion; 1, tumor with bone invasion
