For elderly patients who cannot tolerate chemotherapy, is radiation alone an option for a stage IA favorable classical Hodgkin lymphoma?

In my experience, it has been extremely unusual that a patient with Hodgkin lymphoma is considered a non-candidate for chemotherapy. But I suspect that in community practice that situation may arise because very infirm patients are not referred to major centers and community oncologists may be a bit more reticent to use chemotherapy if there are relative contraindications. That said, I would not deprive a patient with stage IA Hodgkin lymphoma (or any stage, for that matter) the most effective s...