A 30-year-old man, who had a repeated history of relapsed Hodgkin's lymphoma over 7 years, developed bilateral pleural effusion and chest wall involvement. He was treated with weekly irinotecan hydrochloride (CPT-11; 80 mg/m2/week). Partial response was observed after two cycles of irinotecan. Neutropenia and diarrhea were tolerable. This case demonstrated that irinotecan has a therapeutic effect in patients with relapsed Hodgkin's lymphoma.