All of the following are examples of microangiopathic hemolytic anemias (MAHAs) except:

a. Thrombotic thrombocytopenia purpura
b. Hemolytic uremic syndrome
c. Disseminated intravascular coagulation (DIC)
d. Immune thrombocytopenia purpura

ANS: D
Thrombotic thrombocytopenia purpura, hemolytic uremic syndrome, and DIC are all examples of MAHAs. An antibody against platelets causes immune thrombocytopenia purpura, and only the platelet count is affected. No anemia exists unless the patient is bleeding because of the low platelet count; if the bleeding is occult, then this eventually could result in iron deficiency anemia but not MAHA.