- Patients with stage IIIa disease will be eligible if it is felt that they are not candidates for possible resection following neo-adjuvant therapy (unresectable T3N1 or T1-3 primary tumors with metastasis limited to single station ipsilateral mediastinal lymph nodes). Patients with stage IIIb disease without significant* pleural effusion will be eligible. This includes patients with metastases to contralateral mediastinal or supraclavicular nodes.