Lee SF, et al. - In the treatment of diffuse large B-cell lymphoma (DLBCL) of the Waldeyer ring (WR), the role radiotherapy (RT) plays and additionally the impacts of associated covariates were investigated in this retrospective cohort study. For this investigation, researchers retrospectively reviewed patients with stage I to II DLBCL of the WR who had treatment at the center between 1994 and 2010. In stage I to II DLBCL of the WR, RT was correlated with improved overall survival (OS) and event-free survival (EFS). In addition, an Eastern Cooperative Oncology Group performance status > 1 and age above 60 years were observed to negatively influence OS and EFS.