- Compare the late toxicity of 6 courses of epirubicin, bleomycin, vinblastine, and prednisone (EBVP) followed by involved-field radiotherapy (IF-RT) (36 Gy) vs IF-RT (20 Gy), vs no IF-RT (closed to accrual as of 6/2002) in patients with supradiaphragmatic Hodgkin's lymphoma, favorable prognosis, and complete remission (CR) or CR unconfirmed after completion of chemotherapy. (Favorable prognosis group [group 1] closed to accrual as of 4/28/04.)