819 / 1266
medulloblastoma
Event Free Survival
- Pts with post-op residual tumor >
1.5 cc had a significantly inferior
prognosis compared to pts
without residual tumor (5 yrs-EFS
64% vs 82%, p<0,01)
- Pts with RT starting < 49 days
after surgery had a 5 year EFS of
81% compared with 67% for pts
who commenced RT > 49 days
after surgery (p=0.04)