Southeast Asian (SEA) ovalocytosis is a largely benign condition characterised by stomatoctes in the peripheral blood. The vast majority of patients are asymptomatic, although a small minority will have a mild anaemia.

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Blood film from a patient with Southeast Asian ovalocytosis. Use the toolbar to adjust the brightness if the film is too dark.

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Blood film from a patient with Southeast Asian ovalocytosis and concomitant iron deficiency.

Blood film features:

  • Stomatocytes, including double stomatocytes
  • Macro-ovalocytes

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