Although cancer is rare in children, it is still the leading cause of death by disease in children ages 1 to 14. Too many white blood cells form and impair normal blood cell functions. Kidney cancer affects the functions of the kidneys. Brain tumors and tumors of the nervous system.
Bone cancer affects the growth of bones.
Lymphoma is cancer of the lymph nodes. What causes these cancers in children is not known. Certain chemicals and viruses may foster the onset of some of them. Heredity may be a factor in some cancers. Medical treatment for cancer may require more than one therapy.