- Induction therapy: Patients receive cisplatin IV over 1 hour on days 1, 8, 29, and 36 and etoposide IV over 1 hour on days 1-5 and 29-33. Thoracic radiotherapy is administered 5 days a week, beginning on day 1 of chemotherapy, for 5 weeks. Patients then undergo radiotherapy boost for 1.5 weeks.