Chronic lymphocytic leukemia (CLL) is a type of leukemia. Leukemia is cancer that affects the blood and bone marrow. Bone marrow is the spongy tissue inside bones where blood cells are made. The term "chronic" in chronic lymphocytic leukemia refers to the slower progression of this cancer.
Chronic lymphocytic leukemia (CLL) is cancer in your blood. CLL can’t be cured, but newer treatments are helping people live long, full lives with this condition.