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Bone marrow smear. (a) Bone marrow smear showed dysplastic change of three-lineage (erythroid, myeloid, and megakaryocyte) to be diagnosed as refractory cytopenia with multilineage dysplasia and ringed sideroblasts (RCMD-RS), WHO classification of MDS. (b) Ringed sideroblasts occupied 40% of erythroid precursors.
