Question: A 67-year-old patient on ticlopidine treatment went to the emergency department with headache, asthenia and petechiae in the lower extremities. In the analytical sample hemoglobin 8.2 g / dl, VCM 100 fl, platelets 25000 / ul and leukocytes 7500 / ul with normal formula. The number of reticulocytes is high and in the blood smear numerous schistocytes are observed. The coagulation studies (APTT, TP and Fibrinogen) are normal. In the biochemistry highlights LDH 2700 IU / l and bilirubin 2.6 mg / dl. What is the most likely diagnosis of the patient? 
 Options:  <1> Autoimmune thrombocytopenic purpura. <2> Thrombotic thrombocytopenic purpura. <3> Medullary aplasia. <4> Drug-induced thrombocytopenia. <5> Disseminated intravascular coagulation.
2