Task: Answer Verification
Input (English): Question: Does systematic mediastinal lymphadenectomy increase postoperative immune response after major lung resections?
Answer: Systematic lymphadenectomy added to major lung resection does not increase postoperative humoral immune response in uncomplicated cases, as measured by levels of IL-6 and IL-1 ra in serum, pleural fluid, and sputum.
Output (English): no