About Acute Lymphoblastic Leukemia (ALL)

Leukemia is a cancer of the blood. In leukemia, normal blood cells are transformed in ways that lead to high counts of white blood cells called lymphocytes.

Lymphocytes are made by the bone marrow and by organs of the lymph system. The term “acute” means that the disease progresses rapidly.

Acute lymphoblastic leukemia (ALL) is a fast-growing, aggressive cancer. Sometimes ALL also spreads beyond the blood and affects internal organs or other areas of the body.