Currently we test and support the following browsers:
Please note that this is not intended to be an exhaustive list of browsers that support web standards, nor a test of browser compliance, nor a side-by-side comparison of various manufacturers’ browsers.
Alternate Names: ALL, acute lymphocytic leukemia, acute lymphoid leukemia
Acute lymphoblastic leukemia (ALL) is the most common form of childhood cancer. It affects lymphocytes, a type of white blood cells. Leukemic cells accumulate in the bone marrow, replace normal blood cells and spread to other organs including liver, spleen, lymph nodes, central nervous system, kidneys and gonads.
In the United States, about 3,000 children each year are found to have acute lymphoblastic leukemia. Peak incidence occurs from 3 to 5 years of age.
ALL affects slightly more boys than girls. It occurs more frequently among whites than blacks. Although siblings of leukemic children have a slightly higher risk of developing the disease, the incidence is relatively low (no more than one in 500).
About 98 to 99 percent of children with newly diagnosed acute lymphoblastic leukemia attain initial complete remissions (absence of detectable leukemic cells by microscopic examination) in four to six weeks. About 90 percent of children can be cured. Patients who remain leukemia-free for 10 years or more can be considered cured.
Chemotherapy is used to kill leukemia cells. All chemotherapy is stopped after two to three years of treatment. Radiation therapy, which used to be a standard component of leukemia treatment, can now safely be eliminated for the majority of children with ALL. Hematopoietic stem cell transplantation is an option for very high-risk cases (e.g., Philadelphia chromosome-positive ALL or slow responders to remission induction therapy) or those who develop an early relapse in the bone marrow.
The St. Jude Web site is designed for educational purposes only and is not engaged in rendering medical advice or professional services. The information provided through this site should not be used for diagnosing or treating a health problem or a disease. It is not a substitute for professional care. If you have or suspect you may have a health problem, you should consult your health care provider.