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Sideroblastic anemia, or sideroachrestic anemia, is a form of anemia in which the bone marrow produces ringed sideroblasts rather than healthy red blood cells (erythrocytes). [1] In sideroblastic anemia, the body has iron available but cannot incorporate it into hemoglobin , which red blood cells need in order to transport oxygen efficiently.
Basophilic stippling, also known as punctate basophilia, is the presence of numerous basophilic granules that are dispersed through the cytoplasm of erythrocytes in a peripheral blood smear. They can be demonstrated to be RNA .
Pappenheimer bodies are abnormal basophilic granules of iron found inside red blood cells on routine blood stain. [1] They are a type of inclusion body composed of ferritin aggregates, or mitochondria or phagosomes containing aggregated ferritin. They appear as dense, blue-purple granules within the red blood cell and there are usually only one ...
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. [1]
Basophilic stippling is one morphologic finding of thalassemia which does not appear in iron deficiency or anemia of chronic disease. The patient should be in an ethnically at-risk group and the diagnosis is not confirmed without a confirmatory method such as hemoglobin HPLC, H body staining, molecular testing or another reliable method.
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Ringed sideroblasts (10 or more iron granules encircling one-third or more of the nucleus) seen on Perls' Prussian blue iron stain (>15% ringed sideroblasts when counted among red cell precursors for refractory anemia with ring sideroblasts) Megakaryocytic series (can be the most subjective) [citation needed]: