In the United States, it is diagnosed nearly 2,000 children and adolescents younger than 20 years of age on a malignant brain tumor. It has been reported the highest rates of infection in 1985-1994 than in 1975-1983.
There
are some discussions about the reasons; one theory is the result of
improved diagnosis and reporting, since it since it came into use in
magnetic resonance imaging examination is widely attributed increased
incidence and mortality rate remained the same.
The average survival rate in children is about 60%. The ratio varies depending on the cancer type, age, younger patients have a higher mortality rate among them.
In children under the age of 2, about 70% of brain tumors are medullary tumors Aborigines, tumor endothelial nervous, glioma. Tumors less common, which are commonly seen in infants, are teratoma, and teratoma rhomboid non-typical [52] tumors germ cells, including teratoma, make up only 3% of primary brain children's tumors, but the incidence worldwide differ greatly.