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The American Cancer Society's most recent estimates for
leukemia in the United States are:
- about 44,790 new cases of leukemia and about 21,870 deaths
from leukemia (all kinds) in 2009
- about 15,490 new cases of CLL
- about 4,390 deaths from CLL
Chronic lymphocytic leukemia accounts for about one-third of
all leukemias. The average person's lifetime risk of getting CLL is
about 1/2 of 1% (about 1 in 200). The risk is slightly higher in men
than in women. Factors such as having a family history of CLL may raise
this risk.
CLL mainly affects older adults. The average age at the time
of diagnosis is around 72 years. It is rarely seen in people under age
40, and is extremely rare in children.
Last Medical Review: 07/27/2009
Last Revised: 07/27/2009
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