Refractory anemia with ring sideroblasts

{{Infobox medical condition (new)

| name = Refractory anemia with ring sideroblasts

| synonyms = RARS

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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.{{cite web|last=Fedoriw|first=Yuri|title=Pathology of Refractory Anemia With Ring Sideroblasts|url=http://emedicine.medscape.com/article/1997096-overview|accessdate=28 August 2013}}