Medulloblastoma is a brain tumor of the cerebellum. The cerebellum controls balance and coordinated movements. The cerebellum is found near the brainstem in a region called the posterior fossa at the back of the brain. There is a 70 percent survival rate with a Medulloblastoma.
Xander’s diagnosis, however, was medulloblastoma with melanotic differentiation and is an extremely rare type of brain tumor. At the time of Xander's diagnosis there had only been 20 other children in the history cancer that had ever been diagnosed with this type of a brain tumor. All of these children except one were reported to pass away.