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CLL Medical Abbreviation

Author: Analgesia logo

Last Updated on March 28, 2025 by Analgesia team

Chronic Lymphocytic Leukaemia | Life Expectancy

 

Cll Medical term

CLL stands for chronic lymphocytic leukemia, a type of blood cancer that affects the bone marrow and red blood cells. CLL is one of the most common types of leukemia in adults, affecting about 5 in 100,000 people in the U.S.

What it is

chronic lymphocytic leukemia is a slow-growing cancer that occurs when the bone marrow produces too many lymphocytes, a type of white blood cell. This prevents the white blood cells from functioning properly to fight infection.

Symptoms

Many people with chronic lymphocytic leukemia don’t have any symptoms for years. When symptoms do occur, they can include swollen lymph nodes and spleen, and problems with bleeding, fighting infection, and carrying oxygen.

Risk factors

  • Age: chronic lymphocytic leukemia usually affects older adults, especially those over age 60.
  • RaceWhite people are more likely to develop CLL than people of other races. 
  • Family historyHaving a close family member with CLL may slightly increase the risk. 

Cause

The exact cause of chronic lymphocytic leukemia (CLL) is unknown, but it’s likely caused by genetic mutations. Genetic mutations can be inherited or caused by environmental exposures. Changes in chromosomes can affect cell growth and the ability to suppress tumors. In most cases of CLL, there’s a change in at least one of the 23 pairs of chromosomes in a cell. The most common deletion is loss of part of chromosome 13

Diagnosis

A complete blood count (CBC) with differential is a common first test. This test measures the number and types of blood cells and can indicate the presence of CLL if there are too many lymphocytes.

Treatment

Treatment options depend on the individual and their situation.  Meanwhile, there are many effective drugs that can help. Some people with CLL may not need treatment right away, a strategy called active monitoring. 

Related Conditions

 

Life Expectancy

CLL is the same disease as small lymphocytic lymphoma (SLL). However, in CLL the cancer cells are mostly found in the blood and bone marrow, while in SLL they are mostly found in the lymph nodes. 
Life expectancy with chronic lymphocytic leukemia varies widely, from 2 years to over 20 yearsAbout half of people with it live for at least 10 years. 

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