Refractory Anemia With Ring Sideroblasts

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2021-01-18
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Refractory anemia with ring sideroblasts is a type of myelodysplastic syndrome. RARS is characterized by 5% or less myeloblasts in bone marrow. RARS is distinguished from refractory anemia by having 15% or more ringed sideroblasts among the erythroid precursors in the bone marrow.