(4) Ovalocvtes. These cells are abnormal erythrocytes that have an oval or
"sausage" shape. They can be found in hereditary elliptocytosis.
Figure 4-2d. Variations in erythrocytes:
Elliptocytes (Oval Erythrocytes).
(5) Target cells (leptocytes). Target cells are erythrocytes that have deeply
stained (pink) centers and borders, separated by a pale ring, giving them a target-like
appearance. They are associated with liver disease and certain hemoglobinopathies.
(6) Burr cells. Burr cells are triangular or crescent-shaped erythrocytes with
one or more spiny projections on the periphery. These cells are seen in uremia, acute
blood loss, cancer of the stomach and pyruvate kinase deficiency.
Figure 4-2e. Variations in erythrocytes: