Abstract
Posttransplant lymphoproliferative disorder (PTLD) is a group of heterogeneous lymphoid diseases that cause serious complications after organ or stem cell transplantation. The onset of PTLD is mostly due to EBV infection-induced B-cell proliferation and a defect in cytotoxic T cell function that occurs with immunosuppression. The usual treatment strategy for PTLD is reduction or withdrawal of immunosuppressive drugs with or without the administration of antiviral agents. Recently, various studies on the efficacy of rituximab or chemotherapy have been reported. We report two cases of rapidly progressing and complicated PTLDs after kidney transplantation that were successfully treated with a combination regimen consisting of rituximab, cyclophosphamide, adriamycin, vincristine and prednisolone (R-CHOP).
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Table 1.
†Death due to PTLD progression. Abbreviations: PTLD, post-transplant lymphoproliferative disease; HSCT, hematopoietic stem cell transplantation; NA, data not available; CSA, cyclosporine; PL, prednisolone; MTX, methotrexate; MMF, micophenolate mofetil; ATG, antithymocyte immunoglobulin; LN, lymph node; DLBCL, diffuse large B-cell lymphoma; RI, reductionof immunosuppressant agents; RTx, radiotherapy; CTx, chemotherapy; ACV, acyclovir; DLI, donor lymphocyte infusion; CR, complete remission; PR, partial remission;SD, stable disease; AZA, azathioprine.