Ovalocyte

Myelodysplasia, iron deficiency, etc. S.E. Asian Ovalocytosis is a specific disorder that results from structural and functional defects of the band 3 protein causing ovalocytes with a stomatocytic appearance. May indicate previous malarial parasites.

https://haematologyetc.co.uk/index.php?title=Ovalocytes

Inherited Defects

S.E.Asian Ovalocytosis A specific disorder that results from structural and functional defects of the band 3 protein causing ovalocytes with a stomatocytic appearance.

Megaloblastic States

Look for characteristic oval macrocytes in the context of typical hypersegmented neutrophils and other features of these disorders

As Part of a Spectrum of Abnormal Cells

Ovalocytes may form as the first stage in elliptocyte formation – consider whether the cells are simply early elliptocytes
Ovalocytes and elliptocytes are present in low number in a range of disorders, in those conditions it is best to focus on the dominant features of the slide