Ring sideroblasts

Case contributed by Dr Daniel J Bell

Bone marrow aspirate


Ring sideroblasts: abnormal deposition of iron in the mitochondria of red cell precursors forming a ring around the nucleus (several ring sideroblasts indicated by red arrows).

Case Discussion

  • Author: Paulo Henrique Orlandi Mourao; zooming in and minor modification by Mikael Häggström.
  • Original file: http://commons.wikimedia.org/wiki/Category:Sideroblastic_anemia#/media/File:Ring_Sideroblast_smear_2010-01-13.JPG
  • Modifications: red arrow annotations
  • License: CC BY-SA 3.0

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