P19.01 Is reduced dose craniospinal radiation safe in adult medulloblastoma?

Medulloblastomas is an orphan disease in adults. Standard treatment of completely removed localised adult medulloblastoma includes a craniospinal, irradiation with 36 Gy to axis and 54 Gy to whole posterior fossa. Pediatric randomized study demonstrated that a decreased dose of 24 Gy to axis with 54 Gy limited to tumoral bed gives similar result as standard therapy, provided chemotherapy is associated. May this pediatric experience be extended to adult population?