What would your radiation field be for a 7.5 cm DLBCL involving the tibia (with pretibial soft tissue involvement) after CR to R-CHOP x6?

Modern radiation fields in this setting would follow principles of involved-site radiotherapy (Yahalom et al., PMID 25863750). In the context of combined-modality therapy, radiation therapy is directed at original sites of involvement only. In this case, I would utilize pre-chemotherapy imaging (PET...