Leukemia is a type of blood cancer that begins in your bone marrow – the soft tissue in the center of your bones, where blood cells are produced. It causes your marrow to produce too many immature white blood cells and not enough healthy red cells, platelets and mature white cells (called leukocytes).
Leukemia can occur in adults or in children. In fact, it’s the most common cancer found in kids and teens.
There are several different types of leukemia. Acute types of leukemia progress quickly, while chronic types of leukemia progress more slowly. Some of the most common types are:
- Acute lymphocytic leukemia (ALL)
- Acute myelogenous leukemia (AML)
- Chronic lymphocytic leukemia (CLL)
- Chronic myelogenous leukemia (CML)
- Hairy cell leukemia