Patients undergo thoracic radiotherapy once daily on days 1-5 of weeks 1-3 and twice daily on days 1-5 of weeks 4 and 5 for a total of 16 fractions. Patients also receive concurrent chemotherapy comprising cisplatin IV on day 1 and etoposide IV on days 1-3. Chemotherapy repeats every 3 weeks for 2 courses. Patients receive filgrastim (G-CSF) subcutaneously (SC) on days 4-13 and 25-34.