- FDG-PET negative: Patients with favorable prognostic profile receive 1 additional courses of ABVD. Patients with unfavorable prognostic profile receive 2 additional courses of ABVD. Patients with favorable or unfavorable prognostic profiles randomized on or after August 9th 2010 who are FDG-PET negative after two courses of ABVD will receive standard combined modality treatment consisting of ABVD and INRT as in arm I.