Comprehensive Assessment of the Clinical Risk Factors of Postoperative Adverse Events and Survival in Patients With Non-small-cell Lung Cancer

Background/Aim: Postoperative adverse events are associated with poor clinical outcomes and survival in patients with non-small-cell lung cancer (NSCLC) treated with curative operation. However, comprehensive evaluation of the clinical characteristics associated with postoperative adverse events and survival outcomes is lacking. Patients and Methods: A retrospective study that evaluated patients with NSCLC who underwent curative surgery between 2008 and 2021 was conducted in a medical center. The baseline characteristics, five-item modified frailty index, sarcopenia, inflammatory biomarkers, surgical approach, postoperative adverse events, and survival were statistically analyzed. Results: Patients with a history of smoking and preoperative sarcopenia were at a higher risk of developing postoperative pulmonary complications. Smoking, frailty, and traditional open thoracotomy (OT) were associated with infections, and sarcopenia was identified as a risk factor for major complications. Advanced tumor stage, high neutrophil-to-lymphocyte ratio, OT, major complications, and infections were identified as risk factors for overall and disease-free survival. Conclusion: Pre-treatment sarcopenia was found to be a predictor of major complications. Infections and major complications were associated with survival outcomes in patients with NSCLC.