Get answers to your Chronic Lymphocytic Leukemia questions.
CLL; Leukemia - chronic lymphocytic (CLL)
Chronic lymphocytic leukemia is cancer of a type of white blood cells called lymphocytes.
Chronic lymphocytic leukemia (CLL) causes a slow increase in white blood cells called B lymphocytes, or B cells. The cancerous cells spread from the blood marrow to the blood, and can also affect the lymph nodes or other organs such as the liver and spleen. CLL eventually causes the bone marrow to fail.
IThe cause of CLL is unknown. There is no link to radiation, cancer-causing chemicals, or viruses.
This cancer mostly affects adults, around age 70. It is rarely seen under age 40. The disease is more common in Jewish people of Russian or East European descent.
Kantarjian H, O'Brien S. The chronic leukemias. In: Goldman L, Ausiello D, eds. Cecil Textbook of Medicine. 23rd ed. Philadelphia, Pa: Saunders Elsevier; 2007: chap 195.
Grever M, Andritsos LA, Lozanski G. Chronic lymphoid leukemia. In: Abeloff MD, Armitage JO, Niederhuber JE, Kastan MB, McKenna WG, eds. Abeloff’s Clinical Oncology. 4th ed. Philadelphia, Pa: Elsevier Churchill Livingstone; 2008:chap 108.
National Comprehensive Cancer Network. National Comprehensive Cancer Network Clinical Practice Guidelines in Oncology: Non-Hodgkin’s Lymphomas. 2011. Version 1.2011.
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