What is the role of RT for a patient with double-hit DLBCL and a single site of relapse who can no longer tolerate chemotherapy?

Double-hit DLBCL, now referred to by the WHO as "High-grade B-cell lymphoma with MYC and BCL2 and/or BCL6 rearrangements" is an aggressive non-Hodgkin lymphoma. The MYC rearrangement results in accelerated growth of the lymphoma while a BCL2 rearrangement (more common than BCL6) results in an anti-a...