C91: Lymphoid leukaemia

Lymphoid leukemia is a group of blood cancers that develop from lymphocytes, a type of white blood cell. These diseases primarily occur in the bone marrow, where blood cells are made but can also affect the lymph nodes, spleen, and other parts of the body. Patients with lymphoid leukemia often feel weak or tired, are prone to infections, lose weight without trying, have frequent nosebleeds or bruising, and experience anaemia, lymph node enlargement, and spleen enlargement. The course of these diseases varies; some forms are slow growing (chronic) and cause few problems over many years, while others are more aggressive (acute) and require immediate medical treatment. The exact causes of lymphoid leukemia are not known; nonetheless, like other cancers, they occur when cells acquire mutations that allow them to grow uncontrollably. Genetic factors and exposure to radiation or certain chemicals may increase the risk.