The Inter-Relationships Among the Risk Factors for Pulmonary Infection and the Diagnostic Utility of Inflammatory Markers in Patients with Non-Small Cell Lung Cancer

Gram-negative bacteria were the main pathogens causing PI in patients with NSCLC. Greater than or equal to 4 cycles of chemotherapy, radiotherapy, and elevated neutrophil count before antineoplastic treatment were independent risk factors for PI in patients with NSCLC. Elevated CRP levels and higher CAR demonstrated a certain diagnostic utility for PI in patients with NSCLC after antitumor treatment.