Period 1997 – 2008
No evaluation for metastasis by pre-operative spinal MRI or CSF
collection was done in this period 20. Maximum safe
surgical resection was attempted. Post-operative brain and spine MRIs
were not routinely obtained. All patients received CSI at a dose of 36Gy
with an additional boost to the posterior fossa of 18-24Gy for a total
dose of 54-60Gy given in fractions of 1.8Gy five times per week.
Patients received maintenance chemotherapy consisting of eight, 21-day
cycles of 1.5mg/m2 vincristine on day 1, oral 40mg/m2 prednisone, and
100mg/m2 procarbazine on days 1-10.