Overview
Chronic lymphocytic leukemia (CLL) is a type of cancer of the blood and bone marrow — the spongy tissue inside bones where blood cells are made.
The term “chronic” in chronic lymphocytic leukemia comes from the fact that this leukemia typically progresses more slowly than other types of leukemia. The term “lymphocytic” in chronic lymphocytic leukemia comes from the cells affected by the disease — a group of white blood cells called lymphocytes, which help your body fight infection.
Chronic lymphocytic leukemia most commonly affects older adults. There are treatments to help control the disease.
Symptoms
Many people with chronic lymphocytic leukemia have no symptoms at first. Signs and symptoms might develop as the cancer progresses. They might include:
- Enlarged, but painless, lymph nodes
- Fatigue
- Fever
- Pain in the upper left portion of the abdomen, which may be caused by an enlarged spleen
- Night sweats
- Weight loss
- Frequent infections
When to see a doctor
Make an appointment with your doctor if you have any persistent signs and symptoms that worry you.
