we conclude that in these two patients with thrombotic microangiopathy , the intrinsic red cell membrane instability resulting from the underlying skeletal defect aggravated the mechanical red cell fragmentation , producing morphological features similar to the severe hemolytic form of hereditary elliptocytosis or hereditary pyropoikilocytosis .
C0013902
hereditary elliptocytosis
C0520739
hereditary pyropoikilocytosis