 
|
| HISTOPATHOLOGIC TYPE |
HISTOPATHOLOGIC GRADE |
|
|
Astrocytoma |
|
|
ASTROCYTOMA |
|
|
Slight hypercellularity |
|
Slight pleomorphism |
|
No vascular proliferation |
|
No necrosis |
|
ANAPLASTIC ASTROCYTOMA |
|
Moderate hypercellularity |
|
Moderate pleomorphism |
|
No necrosis |
|
Vascular proliferation |
|
GLIOBLASTOMA MULTIFORME |
|
Moderate to marked hypercellularity |
|
Moderate and marked pleomorphism |
|
Necrosis with or without pseudopalisading (required) |
|
Vascular proliferation |
|
|
|
| HISTOPATHOLOGIC TYPE |
HISTOPATHOLOGIC GRADE |
|
|
Oligodendroglioma |
Not applicable |
|
|
Ependymal and choroid plexus tumor |
|
|
Medulloblastoma |
|
|
Meningioma, malignant |
|
|
Neurilemmoma (neurinomas,
schwannomas), malignant |
|
|
Hemangioblastoma |
|
|
Neurosarcoma |
|
|
Other sarcoma |
|
