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  • Title: The relationship between chronic obstructive pulmonary disease and non-small cell lung cancer in the elderly.
    Author: Wang P, Zhu M, Zhang D, Guo XG, Zhao S, Zhang XL, Wang DL, Liu CT.
    Journal: Cancer Med; 2019 Aug; 8(9):4124-4134. PubMed ID: 31184445.
    Abstract:
    OBJECTIVES: Chronic obstructive pulmonary disease (COPD) and NSCLC often coexist and have poor prognoses, but studies investigating the impact of COPD on NSCLC have reported inconsistent findings. The objective of this study was to compare survival between NSCLC patients with and without COPD. METHODS: Medical records were retrospectively collected from 301 elderly patients pathologically diagnosed with NSCLC from the Chinese PLA General Hospital. Ultimately, a total of 200 patients were enrolled in the analysis. The survival rates between the COPD-NSCLC and non-COPD NSCLC were assessed using log-rank and Cox proportional hazard regression analyses. RESULTS: A total of 117 COPD-NSCLC and 93 non-COPD NSCLC patients were enrolled in the analysis. The median overall survival times were 108.5 months in the non-COPD group and 45.0 months in the COPD group (HR: 2.05; 95% CI, 1.36-2.97, P = 0.0004). After 118 patients underwent propensity score matching, the median overall survival times were 100.6 months in the non-COPD group and 51.9 months in the COPD group (HR: 1.59; 95% CI, 1.096-2.64, P = 0.0459). The multivariate analysis showed that presence of COPD (HR 1.619, P = 0.030), old age (HR 1.007, P < 00001), an advanced disease stage (stage Ⅲ HR 5.513, P < 0.0001; stage Ⅳ HR 11.743, P < 0.0001), the squamous cell carcinoma histological subtype (HR 3.106, P < 0.0001), the presence of a cough (HR 2.463, P = 0.001) a higher serum carcinoembryonic antigen level (HR 1.001, P = 0.023) and higher NRL (HR 2.615, P = 0.007) were independent factors that were significantly associated with poorer survival. CONCLUSION: A diagnosis of COPD had significant poorer survival outcomes in NSCLC than that of patients without COPD in this elderly population.
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