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Methotrexate/iatrogenic lymphoproliferative disorders in rheumatoid arthritis: histology, Epstein-Barr virus, and clonality are important predictors of disease progression and regression.
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Abstract
Patients with rheumatoid arthritis (RA) may develop lymphoproliferative disorders (RA-LPD). Immunosuppressive states due to methotrexate (MTX) and Epstein-Barr virus (EBV) reactivation have been regarded as causes. Sometimes spontaneous regression occurs after withdrawal of MTX. The objective of this study was to identify factors predictive of relapse and survival in patients with RA-LPD, and spontaneous regression in patients with RA-LPD treated with MTX (MTX-LPD).