Would you recommend radiation to oligometastatic boney site for an otherwise pure seminoma who had a CR to BEP x4?   

I would first suggest getting a biopsy of the bone lesion. It can be difficult to assess response in a bone met. Solitary bone met is extremely rare in germ cell cancers. If there is disease that did not respond to 4xBEP at a metastatic site, this suggests that the patient harbors micometasti...