Leukemia Acute leukemia 2008-03-27T10:32:00Z SNOMEDCT_US:91855006 Acute blood cancer SNOMEDCT_US:24072005 UMLS:C0085669 HP:0002488 UMLS:C4280572 A clonal (malignant) hematopoietic disorder with an acute onset, affecting the bone marrow and the peripheral blood. The malignant cells show minimal differentiation and are called blasts, either myeloid blasts (myeloblasts) or lymphoid blasts (lymphoblasts). Acute leukaemia Acute leukemias