Japan retrospective study of 38 RA pts who developed MTX assoc lymphoproliferative disorder (LPD) - 22 w/ spontaneous regression (SR) vs 16 non-SR (w/ 5 deaths). non-SR Pt had higher LDH levels at Dx & lower lymphocyte recovery 1 mo. post MTX withdrawal & higher mortality risk https://t.co/SsBQRxFvD1