Refractory anemia with excess of blasts

Refractory anemia with excess of blasts (RAEB) is a type of myelodysplastic syndrome with a marrow blast percentage of 5% to 19%. Refractory anemia with excess of blasts (RAEB) is a type of myelodysplastic syndrome with a marrow blast percentage of 5% to 19%. In MeSH, 'Smoldering leukemia' is classified under RAEB.  This article incorporates public domain material from the U.S. National Cancer Institute document 'Dictionary of Cancer Terms'.