What is the role of salvage radiation therapy in patients with locally recurrent Hodgkin lymphoma after an autologous stem cell transplant?

How best to employ radiation therapy in patients with Hodgkin lymphoma (HL) who progress after autologous stem cell transplantation (ASCT) is not entirely clear. Often such patients are considered for an allogeneic stem cell transplant, typically utilizing a non-myelablative conditioning regimen. Th...