Adult medulloblastoma: a single institution experience.

The mean age was 24 years (maximum 52). There were 19 male and 16 female patients. CSF spread was documented in 23 patients. Eight patients developed relapse. Four patients developed isolated CNS relapse, two patients developed isolated lung metastasis and 2 patients developed both lung metastasis and CNS relapse. The craniospinal radiation dose ranged from 34 to 36 Gy and the total posterior fossa dose ranged from 54 to 56 Gy. The 10 year disease free survival rate reached 65% +/10. The relapse free survival was significantly different according to the M stage (M0, M1, M2 & 3), as none of the patients in the M0 group had relapsed while 4 patients in the M1 group and 4 patients in the M2&3 group relapsed (p=0.0026).