Case Report
Thrombotic Thrombocytopenic Purpura due to Checkpoint Inhibitors
Table 1
Laboratory studies on admission.
| Variable | On admission |
| Hgb | 6 g/dL | HCT | 18.7% | PLT | 20,000 per microliter | LDH | 998 U/L | Total bilirubin | 1.9 mg/dL | Creatinine | 0.9 mg/dL | D-dimer | 7342 ng/mL | Haptoglobin | <10 mg/dL | Fibrinogen | 349 mg/dL | PT | 12 sec | INR | 1 | PTT | 31 sec | Heparin-induced anti-PF4 antibodies | 0.312 | Direct Coomb’s test | Negative | Blood culture | Negative | Urine culture | Negative | Peripheral blood smear | Fragmented erythrocytes Polychromasia Nucleated RBCs Schistocytes |
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