Chronic Myeloid Leukemia

Chronic myeloid leukemia (CML), also known as chronic myelogenous leukemia, is a type of cancer that starts in the blood-forming cells of the bone marrow and invades the blood. In CML, leukemia cells tend to build up in the body over time, but many people don't have any symptoms for at least a few years. In time, the cells can also invade other parts of the body, including the spleen. CML can also change into a fast-growing acute leukemia that invades almost any organ in the body.

Most cases of CML occur in adults, but very rarely it occurs in children, too. In general, their treatment is the same as for adults.

Leukemia is different from other types of cancer that start in organs such as the lungs, colon, or breast and then spread to the bone marrow. Cancers that start elsewhere and then spread to the bone marrow are not leukemia.