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.