DISEASE CHARACTERISTICS: Histologically confirmed Stage III (T1-2 N2-3 M0, T3 N2 M0, or T4 N0-3 M0) non-small cell lung cancer Must be candidates for either a resection with curative intent or definitive thoracic irradiation following induction chemotherapy No malignant pericardial or pleural effusions or superior vena cava syndrome Must have measurable or evaluable indicator lesions