Cancer is a group of diseases characterized by the uncontrolled growth and spread of abnormal cells. If the spread is not controlled, it can result in death. Cancer is caused by both external and internal factors, and these factors act together or in sequence to initiate or promote the development of cancer.
acute lymphocytic leukemia- 26%
brain and central nervous system- 21%
non-Hodgkin lymphoma- 6%
Hodgkin lymphoma- 15%
thyroid carcinoma- 11%
brain and central nervous system- 10%
testicular germ cell tumors- 8%
The main reason for listing the previous facts is to emphasize the importance of this fact: ALL types of childhood cancers combined receive only 4% of U.S. federal funding for cancer research.