99 / 1708
Staging – metastatic disease (M)
•
Mo
No evidence of subarachnoid or hematogenous spread
•
M1
Tumor cells found in CSF
•
M2
Intracranial tumor beyond primary site
•
M3
Gross nodular seeding in spinal subarachnoid space
•
M4
Metastases outside the cerebrospinal axis (esp bone)