A 35-year-old woman, taking contraceptives, comes to the emergency department with febrile syndrome and paresthesias in the left hemibody. Blood tests showed Hb 7.5 g/dL, platelets 7,000/microl, normal leukocytes with normal differential count, LDH 1,200 IU/l, reticulocytes 10% (normal 0.5-2%), undetectable serum haptoglobin, negative direct Coombs' test and peripheral blood smear with schistocytes. Coagulation (prothrombin time and APTT) normal. Which of the following is the most likely diagnosis:
The patient presents criteria for Thrombotic Thrombocytopenic Purpura (TTP): 1. Neurological alteration. 2. Febrile syndrome (fever). 3. Coombs negative migroangiopathic hemolytic anemia (presence of schistocytes). 4. Thrombopenia.
Autoimmune hemolytic anemia.
Thrombotic thrombocytopenic purpura.
Evans syndrome (hemolytic anemia and immune thrombopenia).
Idiopathic immune thrombocytopenia.
The patient presents criteria for Thrombotic Thrombocytopenic Purpura (TTP): 1. Neurological alteration. 2. Febrile syndrome (fever). 3. Coombs negative migroangiopathic hemolytic anemia (presence of schistocytes). 4. Thrombopenia.