The most common cancers in children are (childhood) leukemia (32%), brain tumors (18%), and lymphomas (11%).
In 2005, 4.1 of every 100,000 young people under 20 years of age in the U.S. were diagnosed with leukemia, and 0.8 per 100,000 died from it.
The number of new cases was highest among the 1–4 age group, but the number of deaths was highest among the 10–14 age group.

In 2005, 2.9 of every 100,000 people 0–19 years of age were found to have cancer of the brain or central nervous system, and 0.7 per 100,000 died from it.
These cancers were found most often in children between 1 and 4 years of age, but the most deaths occurred among those aged 5–9.
The main subtypes of brain and central nervous system tumors in children are: astrocytoma, brain stem glioma, craniopharyngioma, desmoplastic infantile ganglioglioma, ependymoma, high-grade glioma, medulloblastoma and atypical teratoid rhabdoid tumor.

Other, less common childhood cancer types are:
Neuroblastoma (6%, nervous system)
Wilms tumor (5%, kidney)
Non-Hodgkin lymphoma (4%, blood)
Childhood rhabdomyosarcoma (3%, many sites)
Retinoblastoma (3%, eye)
Osteosarcoma (3%, bone cancer)
Ewing sarcoma (1%, many sites)
Germ cell tumors (5%, many sites)
Pleuropulmonary blastoma (lung or pleural cavity)
Hepatoblastoma and hepatocellular carcinoma (liver cancer)
The most common cancers in children are (childhood) leukemia (32%), brain tumors (18%), and lymphomas (11%). In 2005, 4.1 of every 100,000 young people under 20 years of age in the U.S. were diagnosed with leukemia, and 0.8 per 100,000 died from it. The number of new cases was highest among the 1–4 age group, but the number of deaths was highest among the 10–14 age group.
In 2005, 2.9 of every 100,000 people 0–19 years of age were found to have cancer of the brain or central nervous system, and 0.7 per 100,000 died from it. These cancers were found most often in children between 1 and 4 years of age, but the most deaths occurred among those aged 5–9. The main subtypes of brain and central nervous system tumors in children are: astrocytoma, brain stem glioma, craniopharyngioma, desmoplastic infantile ganglioglioma, ependymoma, high-grade glioma, medulloblastoma and atypical teratoid rhabdoid tumor.
Other, less common childhood cancer types are:
Neuroblastoma (6%, nervous system)
Wilms tumor (5%, kidney)
Non-Hodgkin lymphoma (4%, blood)
Childhood rhabdomyosarcoma (3%, many sites)
Retinoblastoma (3%, eye)
Osteosarcoma (3%, bone cancer)
Ewing sarcoma (1%, many sites)
Germ cell tumors (5%, many sites)
Pleuropulmonary blastoma (lung or pleural cavity)
Hepatoblastoma and hepatocellular carcinoma (liver cancer)
Childhood cancer