<unk>  is a disorder passed down through families in which the red blood cells are abnormally shaped.
Hereditary elliptocytosis
Hereditary spherocytosis
Familial erythrocytosis
Diamond-Blackfan anemia
Macroglobulinemia
Congenital dyserythropoietic anemia
Myeloperoxidase deficiency
Paroxysmal nocturnal hemoglobinuria