| 1 |
Localized only (localized, NOS)
- Confined to tissue or site of origin |
| 2 |
Regional, NOS
- Adjacent connective/soft tissue
- Adjacent muscle
- Brain for cranial nerve tumor(s)
- Major blood vessel(s)
- Meningeal tumor infiltrates nerve
- Nerve tumor infiltrates meninges (dura)
- Sphenoid and frontal sinuses (skull) |
| 7 |
Distant site(s)/lymph node(s) involved
- Distant site(s) (including further contiguous extension)
+ Bone other than skull
+ Brain except for cranial nerve tumor(s)
+ Eye
- Distant lymph node(s), NOS
- Distant metastasis, NOS
+ Carcinomatosis
+ Distant metastasis WITH or WITHOUT distant lymph node(s) |
| 8 |
Benign or borderline brain |
| 9 |
Unknown if extension or metastasis |
