Cabot rings consist of nuclear remnants or part of the mitotic spindle. Their presence is indicative of dyserythropoeisis. Thus, it may be seen in megaloblastic anemia, lead poisoning, and myelodysplastic syndrome (MDS).
Appearance
Cabot rings are thin oval or figure-8 shaped inclusions in the cytoplasm of a red blood cell.
Lookalikes
Water artifacts can appear as rings in a red blood cell. However, they are highly refractile. If morphology cannot be distinguished, make a new slide.
