Combination Chemotherapy With or Without Rituximab in Treating Participants With Stage III-IV Classic Hodgkin Lymphoma

This phase II trial studies how well combination chemotherapy with or without rituximab works in treating participants with stage III-IV classic Hodgkin lymphoma. Monoclonal antibodies, such as rituximab, may interfere with the ability of tumor cells to grow and spread. Drugs used in chemotherapy, such as doxorubicin hydrochloride, bleomycin, vinblastine, and dacarbazine, work in different ways to stop the growth of tumor cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. Giving rituximab with combination chemotherapy may work better in treating participants with classic Hodgkin lymphoma.