Anemia Due to Enlarged Blood Cells in Cats

Anemia, Megaloblastic (Anemia, Nuclear Maturation Defects) in Cats
 
In this disease, red blood cells fail to divide and become abnormally large. These cells are also deficient in necessary DNA material. These giant cells with underdeveloped nuclei are called megaloblasts, or "big cells." Red blood cells are mainly affected, but white blood cells and platelets can also go through changes.
 
For cats that have anemia associated with feline leukemia virus (FeLV), this type of anemia is expected to occur. The seriousness of the anemia can rang from mild to severe.
 
...read more

  • Cat Health Conditions

Source: 

Visit PetMD for more information about this condition.