RESUMO
Recenly,the incidence of posttransplatation lymphoproliferative disorder(PTLD) is rising,Immunodeficiency and EBV-infection are risk factors of pathogenesis related. The majority of PTLD originates from malignant proliferation of B-cell.Typical pathologic findings of PTLD are large number of plasmacytoid B cells in lymphotic tissue and often with necrosis in regional areas. Molecular biology findings are ras or p53 gene mutation and c-myc?bcl-6 gene rearrangement. Highly immunosuppressed patients may present with diffuse infiltration and functional failure of multiple organs,the prognosis is poor. Except for the decrease or discontinuation of the immunosuppressive therapy,antiviral agents and interferon- ?,anti B-cell monoclonal antibodies,autologous EBV-specific cytotoxic T cell and combination chemotherapy may achieve better responses.
RESUMO
Tuberculosis is a significant opportunistic infection often found in transplant recipients. Although not common, tuberculosis has been known to develop in higher incidence among transplant recipients than in the general population. The diagnosis and treatment of the tuberculosis in transplant recipients are more complicated because of the side effects of antituberculous agents, their interaction with immunosuppressive drugs, and the higher incidence of atypical presentations with extrapulmonary disease. The patient in this report had no evidence of tuberculous infection anywhere through the body before the transplant. The course of disease was continuously devastating despite active antituberculosis therapy. Only after the transplant nephrectomy, patient's general condition improved. The authors report a patient with tuberculous abscess, developed in a renal allograft after chronic rejection.