This year, an estimated 48,610 people of all ages (27,880 men and 20,730 women) in the United States will be diagnosed with leukemia. Of these, an estimated 15,680 people (9,720 men and 5,960 women) will be diagnosed with CLL. T-cell leukemia is rare and the number of people diagnosed each year is much lower.

Cancer statistics should be interpreted with caution. These estimates are based on data from thousands of people with this type of cancer in the United States each year, but the actual risk for a particular individual may differ. It is not possible to tell a person how long he or she will live with leukemia. Learn more about understanding statistics [2].

Statistics adapted from the American Cancer Society's publication, Cancer Facts and Figures 2013.