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Anisocytosis

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

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Anisocytosis describes an abnormal variation in the size of red blood cells.

Causes include:

  • iron deficiency anaemia, especially if mixed with folate deficiency
  • thalassaemia
  • megaloblastic anaemia
  • sideroblastic anaemia
  • blood transfusion - the host and infused blood cells having different sizes

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