Tags: Disease.
Precursor B-cell lymphoblastic leukemia is a form of lymphoid leukemia in which too many B-cell lymphoblasts (immature white blood cells) are found in the blood and bone marrow. It is the most common type of acute lymphoblastic leukemia (ALL). It is sometimes additionally classified as a lymphoma as designated leukemia/lymphoma.It consists of the following subtypes: t(9;22)-BCR/ ABL t(v;11q23)-MLL rearrangement t(1;19)-E2A/PBX1 t(12;21)-ETV/ CBFα t(17;19)-E2A-HLF↑