RATIONALE: Monoclonal antibodies, such as rituximab, can block cancer growth in different ways. Some block the ability of cancer cells to grow and spread. Others find cancer cells and help kill them or carry cancer-killing substances to them. Drugs used in chemotherapy work in different ways to stop the growth of cancer cells, either by killing the cells or by stopping them from dividing. Giving rituximab together with combination chemotherapy may kill more cancer cells. PURPOSE: This phase II trial is studying how well giving rituximab together with combination chemotherapy works in treating patients with newly diagnosed stage II, stage III, or stage IV Hodgkin's lymphoma.
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Effect of Rituximab on EBV(+) Tumors
Timeframe: Up to 56 months
Relationship Between Marker Detection and Clinical Outcome
Timeframe: 3 years