The proposed study is based on the repeated demonstration that patients with Hodgkin lymphoma who attain a negative PET scan early in therapy (after one or 2 cycles of chemotherapy) have a uniformly excellent outcome, with long term disease free survival of 90-95%. We propose to abbreviate chemotherapy in those patients showing a complete metabolic response as measured by FDG-PET after one cycle of ABVD. These patients will undergo two more cycles of ABVD chemotherapy, for a total of 3 cycles. Those patients failing to achieve a complete metabolic response as demonstrated by residual FDG avidity will go off study and be treated as per their primary treating physician.