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  • Title: Hemolytic anemia after kidney transplantation: case report and differential diagnosis.
    Author: Frohn C, Jabs WJ, Fricke L, Goerg S.
    Journal: Ann Hematol; 2002 Mar; 81(3):158-60. PubMed ID: 11904742.
    Abstract:
    A 58-year-old woman presented with hemolysis and thrombocytopenia 2 weeks after receiving a kidney graft. Hemolytic uremic syndrome was initially suspected, because in addition to hematological changes the graft function was missing. Unexpectedly, the results of the direct antiglobulin test became positive (4+), which is not normally observed in the hemolytic uremic syndrome. Differentiation of the eluted antibodies revealed anti-rhesus D specificity, which had to be interpreted either as an autoantibody of patient's origin or, hypothetically, as a "graft versus host" antibody of donor origin. Gm- and Km allotyping of these antibodies demonstrated a pattern which differed from the patient's but was identical to that of the kidney donor. Therefore hemolysis could be explained unambiguously by "graft versus host" antibodies. Whether the thrombocytopenia was also due to an immune process was not clear, although some evidence favors this hypothesis. Immunosuppressive treatment remained unchanged and several red blood cell transfusions were necessary before reactivity of the direct antiglobulin test diminished and became negative 7 weeks after kidney transplantation. The occurrence of hemolysis in the early posttransplantation period should thus draw attention to the possibility of "graft versus host" antibodies directed against red cells. Concomitant thrombocytopenia may occur. Donor screening for irregular erythrocyte antibodies should be performed whenever solid organ transplantation is intended.
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