“…In another study, Wray et al [16] evaluated 17 pediatric patients treated with PT and reported three recurrences, including two among patients with advanced stage IV disease. All three of those recurrences had a component of infield recurrence after 21-25.5 Gy, similar to the pattern of recurrence seen after photon radiation to 21 Gy in pediatric HL [17] and what was seen in the present study. ABVD: doxorubicin (Adriamycin), bleomycin, vinblastine, and dacarbazine; ABVE-PC: doxorubicin (Adriamycin), bleomycin, vincristine, etoposide, prednisone, and cyclophosphamide.…”