Acute leukaemia is a type of cancer of the blood and bone marrow cells. "Acute" indicates that the leukaemia develops and advances quickly and requires immediate medical attention. In patients with acute leukaemia the bone marrow produces an excessive amount of abnormal immature white blood cells which do not function normally. Patient may have low amounts of normal blood cells. There are 2 main types of acute leukaemia, acute myeloid leukaemia and acute lymphoblastic leukaemia.
