Chronic Lymphocytic Leukemia (CLL)

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Chronic Lymphocytic Leukemia Facts

Chronic lymphocytic leukemia (CLL) is a type of cancer that begins in your bone marrow. The term “chronic” indicates that the disease progresses slowly. CLL is the most prevalent form of leukemia in Western countries, accounting for about one-third of all leukemias. According to the American Cancer Society, there were 15,110 newly diagnosed cases of CLL in the United States in 2008. CLL is typically a disease of older people and is rarely found in children.

What Is Leukemia?

An overview about leukemia in general and chronic lymphocytic leukemia in particular.

Symptoms and Risk Factors

Learn about the symptoms and risk factors associated with CLL.

Diagnosing CLL

Here’s how your doctor will test for and diagnose CLL.