Classification of Epstein-Barr virus-associated posttransplant lymphoproliferative diseases: implications for understanding their pathogenesis and developing rational treatment strategies.
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Abstract
The Epstein-Barr virus (EBV) is associated with a spectrum of B-cell lymphoproliferative diseases (LPD) that develop following organ transplantation. A classification scheme for these disorders has been developed based on the clinical, histologic, immunologic cell-typing, cytogenetic, immunoglobulin gene-rearrangement, and virologic characteristics of these LPD. Four disease groups have been identified: (a) uncomplicated posttransplant infectious mononucleosis, (b) benign polyclonal polymorphic B-cell hyperplasia, (c) early malignant transformation in polyclonal polymorphic B-cell lymphoma, and (d) monoclonal polymorphic B-cell lymphoma. This classification has furthered our understanding of the pathogenesis of these diverse LPD and has allowed the development of rational treatment protocols.