Chronic Obstructive Pulmonary Disease in Lung Cancer Patients: Prevalence, Underdiagnosis, and Clinical Characterization

<b><i>Background:</i></b> Lung cancer (LC) and chronic obstructive pulmonary disease (COPD) are associated with increased morbidity and mortality. The differential clinical and functional features among LC patients with or without COPD have not been defined. <b><i>Objectives:</i></b> The aims of this study were to examine the prevalence and underdiagnosis rate of COPD in LC patients and to compare...