- Radiotherapy: Within 2 weeks after completion of the ICE or GND regimen, patients who have no history of prior radiotherapy receive radiotherapy according to stratification by disease extent (isolated lymph nodes vs ≥ 2 contiguous nodal-based masses with or without extensive small-volume lymphadenopathy vs extensive small-volume lymphadenopathy). These patients undergo either involved-field radiotherapy (IFRT) twice daily over 1-2 weeks, total lymphoid irradiation (TLI) twice daily over 1 week, or both concurrently.