Children with Down s syndrome have an increased risk of acute myeloid leukemia during the first three years of life.
Bone marrow is the spongy tissue inside the large bones in the body.
Bone marrow cells are produced by immature, immortal stem cells. White blood cells fight infection. Platelets make the blood clot. The bone marrow controls the production of normal cells. In patients with leukemia the production process breaks down and the bone marrow starts producing large numbers of abnormal cells of only one cell type, usually one of the white cells.