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What is chronic lymphocytic leukaemia? - Chronic lymphocytic leukaemia

  • Chronic lymphocytic leukaemia is a rare type of cancer that affects the blood and bone marrow.
  • It usually develops very slowly and does not always need to be treated straight away.
  • Chronic lymphocytic leukaemia cannot usually be cured, but it can be managed with treatment.
  • It's more common as you get older. It's very rare in people under 40.
  • It's not clear what causes chronic lymphocytic leukaemia, but having a close family member who's had it may mean you have a slightly higher risk.

Important: Get your symptoms checked

It's important to get any symptoms of chronic lymphocytic leukaemia checked as soon as possible. Finding it early can mean it's more treatable.

Page last reviewed: 17 January 2023
Next review due: 17 January 2026