In what situations would you offer salvage radiotherapy for relapsed/refractory DLBCL?

There are a number of different clinical scenarios when I would consider RT in patients with relapsed/refractory DLBCL. NCCN guidelines (page BCEL-7 and BCEL-8) list RT as an option in several of these settings.

1. Relapsed disease s/p autologous or allogeneic stem cell transplantation - In patients ...