636 / 1161
Ms E, 51 years old
•
Grade III (malignant or anaplastic) meningioma has a poor outlook
•
WHO Grade
5 year local control
– I
90 - 95%
– II
40 - 60%
– III
20 - 50%
•
Grade III often transform from lower grade
•
Metastasis seen in (only) 0.1% of cases, all grade III tumours