Chronic lymphocytic leukemia (CLL) is a type of cancer that starts in white blood cells called lymphocytes, which are made in the bone marrow. CLL is one of the most common types of leukemia in adults. It usually progresses slowly over time. In CLL, the bone marrow produces too many abnormal lymphocytes. These leukemia cells build up in the blood, bone marrow, and sometimes other organs such as lymph nodes, liver, and spleen. The abnormal lymphocytes do not function normally and crowd out healthy blood cells, which can lead to problems like infections, anemia, and easy bleeding. Many people with CLL do not have symptoms initially, and the disease may be found during routine blood tests. When symptoms occur, they can include fatigue, swollen lymph nodes, fever, night sweats, weight loss, and frequent infections. CLL is mainly a disease of older adults and is considered a chronic condition because it typically gets worse slowly. It is sometimes classified as a subtype of lymphoma due to its origin from B-cell lymphocytes. While there is no cure for CLL, treatments can help manage the disease and maintain quality of life. Overall, CLL is a slow-growing blood cancer affecting the lymphocytes and bone marrow, with various symptoms and treatment options depending on the stage and progression of the disease. If you want, I can provide more details about CLL symptoms, diagnosis, or treatment options.
