years old and she has been diagnosed with medulloblastoma. joining us to talk about it is our chief medical correspondent doctor gunther. certainly we wish her and her family all the best she is fighting this. tell us more about this type of cancer. >> that was really touching. i have kids that age now. you really strikes you in this case daughter calls and says she has been having headaches for some time. obviously thinking initially it is just headaches. but a medulloblastoma is what this ends up being with is a type of brain tumor. it is rare. someone is calling with headaches it is typically not going to be this. we talk about rear in the united states some few hundred people are diagnosed every year. around 4000 just under 4000 people are living with a tumor like this. you get an idea of how small the numbers are. it is the most common pediatric brain cancer.