The conventional treatment modality for stage III or IV Hodgkin lymphoma has been doxorubicin, bleomycin, vinblastine, and dacarbazine (ABVD), which has remained unmodified over the years. However, a significant percentage of patients experience relapse or refractory disease after treatment with ABVD. New treatment methods, namely treatment regimens with brentuximab vedotin, have proven to be relatively...