The right answer is Leukemia.
Leukemia is a cancer of the cells of the bone marrow (the cells of the marrow produce the blood cells, hence the term sometimes used for blood cancer), forming part of the hematological malignancies.
Leukemias are distinguishable from lymphomas that develop from a secondary lymphoid organ.
Bone marrow stem cells produce billions of red blood cells, white blood cells and platelets daily. Leukemia is characterized by an abnormal and excessive proliferation of precursors of white blood cells, blocked at a stage of differentiation, which ends up completely invading the bone marrow and then the blood. A medullary insufficiency chart is established, with insufficient production of red blood cells (source of anemia), normal white blood cells, polynuclear cells mainly (neutropenia, source of serious infections) and platelets (thrombocytopenia, source of haemorrhages). provoked or spontaneous).