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Event-free survival according to extranodal (EN) disease status at autologous stem cell transplantation. (A) Comparison between 0-1 EN site and more than 1 EN site showed no difference in event-free survival. (B) Modified categorization: patients with no remaining EN site had a 2-year event-free survival rate of 62%, significantly better than the 14% rate observed in patients with remaining EN site(s) at autologous stem cell transplantation.
