Megaloblastic anemia

anemic condition in which the bone marrow contains a disproportionate amount of megaloblasts (abnormally large precursors of erythrocytes), and the peripheral blood contains macrocytes and ovalocytes (oval-shaped erythrocytes) and multisegmented neutrophil granulocytes

Description
Megaloblastic conditions are generally brought about by abnormal maturation of the nuclei of erythrocytes, for instance as a result of defective DNA synthesis owing to low vitamin-B12 intake, pregnancy, alcoholism, or chronic liver disease. See pernicious anemia