- Chemotherapy: Patients receive vinblastine IV and cyclophosphamide IV on day 1; oral procarbazine and oral prednisolone on days 1-5; oral etoposide on days 15-19; and mitoxantrone IV and bleomycin IV on day 15. Treatment repeats every 28 days, in the absence of disease progression or unacceptable toxicity, for a total of 3 courses in patients with early (stage IA or IIA) disease or 6 courses in patients with advanced (stage IB or IIB-IV) disease.