Table 1.

WHO classification of precursor lymphoid neoplasms.

Precursor Lymphoid Neoplasms
B-lymphoblastic leukemia/lymphoma not otherwise specified (NOS)
B-lymphoblastic leukemia/lymphoma with recurrent genetic abnormalities B-lymphoblastic leukemia/lymphoma with t(9;22)(q34.1;q11.2); BCR-ABL1 B-lymphoblastic leukemia/lymphoma with t(v;11q23.3); KMT2A-rearranged B-lymphoblastic leukemia/lymphoma with t(12;21)(p13.2;q22.1); ETV6-RUNX1 B-lymphoblastic leukemia/lymphoma with hyperdiploidy B-lymphoblastic leukemia/lymphoma with hypodiploidy B-lymphoblastic leukemia/lymphoma with t(5;14)(q31.1;q32.1); IGH-IL3 B-lymphoblastic leukemia/lymphoma with t(1;19)(q23;p13.3); TCF3-PBX1 B-lymphoblastic leukemia/lymphoma, BCR-ABL1-like B-lymphoblastic leukemia/lymphoma with iAMP21
T-lymphoblastic leukemia/lymphoma Early T-cell precursor lymphoblastic leukemia
NK-lymphoblastic leukemia/lymphoma