EPSTEIN-BARR VIRUS-NEGATIVE LYMPHOPROLIFERATIVE DISORDERS IN LONG-TERM SURVIVORS AFTER HEART, KIDNEY, AND LIVER TRANSPLANT1

Late occurring lymphomas could be considered an entity distinct from PTLD, occurring within 1 year of transplant, because they show a histological and clinical presentation similar to lymphomas of immunocompetent subjects, are frequently negative for the EBV genome, are invariably clonal, and may rearrange the c-myc oncogene. New therapeutic strategies are required to reduce the mortality rate, and new modalities of long-lasting immunosuppression are called for.