General leukemia; Leukemia cancer 

Chronic lymphocytic leukemia cancer; Leukemia, Chronic Lymphocytic 

Cancer that starts in blood-forming tissue such as the bone marrow, and causes large numbers of blood cells to be produced and enter the bloodstream.

Chronic lymphocytic leukemia (also called CLL) is a blood and bone marrow disease that usually gets worse slowly. CLL is the second most common type of leukemia in adults. It often occurs during or after middle age; it rarely occurs in children. Normally, the body produces bone marrow stem cells (immature cells) that develop into mature blood cells. There are 3 types of mature blood cells: Red blood cells that carry oxygen and other materials to all tissues of the body. White blood cell...

Leukemia as related to Chronic Lymphocytic Leukemia