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Early-stage classic Hodgkin lymphoma has been highly curable using extended-field radiation therapy (RT) alone, combined-modality therapy consisting of chemotherapy and RT, and more recently chemotherapy alone. Radiation therapy either to an extended field (extended-field RT) or to various iterations of an involved field (involved-field RT) is potentially associated with late morbidity and mortality, particularly second primary cancers and cardiovascular complications. Treatment with chemotherapy alone, when possible, can achieve a high cure rate while avoiding these risks. This review describes the evolution of treatment for early-stage classic Hodgkin lymphoma.