Hereditary elliptocytosis
Hematopoietic system disease characterized by oval or elliptical red blood cells, slight or absent hemolysis with little or no anemia; splenomegaly is often present
Hereditary elliptocytosis, also known as ovalocytosis, is an inherited blood disorder in which an abnormally large number of the person's red blood cells are elliptical rather than the typical biconcave disc shape. Such morphologically distinctive erythrocytes are sometimes referred to as elliptocytes or ovalocytes. It is one of many red-cell membrane defects. In its severe forms, this disorder pr... Wikipedia