Chronic refractory anemia with granulocytopenia, and/or thrombocytopenia. Myeloblasts and progranulocytes constitute 5 to 40 percent of the nucleated marrow cells.

Synonyms: Smoldering Leukemias, RAEM, Smouldering Leukemia, Smoldering Leukemia, Anemia, Refractory, with Excess of Blasts, Refractory Anemia with Excess of Blasts, RAEB, Leukemias, Smoldering, Leukemia, Smouldering, Leukemia, Smoldering