My friend, who is 14, has been diagnosed as brain cancer over 1 month ago and his tumor, which is between the 2... parts of the brain(pardon my english), brusted this morning. He's in the emergency in a deep coma and the doctors dont know what to do. I dont really understand how a tumor can burst. I thought cancer cells only travel around the body. Does any form of liquid exist within the tumor that lead to the burst. Please help.