Thrombotic microangiopathy associated with chemotherapy: case report and review of the literature

Thrombotic microangiopathy (TMA) is a serious toxicity associated with a small number of antineoplastic agents. A case report of a patient with probable cisplatin and bleomycin-induced TMA is presented. The basic triad of symptoms that occurs in the TMA syndrome include microangiopathic hemolytic anemia, thrombocytopenia, and renal impairment. Cardiovascular, pulmonary, and neurologic complications also occur frequently. The pathogenesis of chemotherapy-associated thrombotic microangiopathy (C-TMA) has not been established. Proposed mechanisms include von Willebrand Factor abnormalities, decreased prostacyclin production, and immune complex formation. Treatment modalities have been unsuccessful and the majority of patients reported have died. Immunoperfusion with staphylococcal protein A is the most effective treatment available and this new technique appears promising. This article reviews the results of all cases of C-TMA reported to date in the English literature and discusses the theories of pathogenesis, clinical features, treatment, and treatment-related complications of the syndrome.

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