Drug-induced Thrombotic Thrombocytopenic Purpura Successfully Treated with Recombinant Human Soluble Thrombomodulin

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A 61-year-old woman with recurrent non-small cell lung cancer presented with thrombocytopenia, microangiopathic hemolytic anemia, neurological abnormalities, renal failure and a fever that appeared during chemotherapy with gemcitabine and bevacizumab. She was diagnosed with drug-induced thrombotic thrombocytopenic purpura (TTP). After the discontinuation of chemotherapy, the administration of recombinant human soluble thrombomodulin and fresh-frozen plasma rapidly ameliorated the TTP. Hypertension preceded the onset of TTP and required the administration of quadruple therapy on admission. However, after three months, the hypertension was controllable without anti-hypertensive drugs. Twelve months later, the ninth course of vinorelbine was administered safely, preventing the patient's lung cancer from progressing.