Context: Chronic obstructive pulmonary disease (COPD) patients are at increased risk, for the development of primary lung cancer
due to cigarette smoking as the common etiological factor. Material and Methods: This study was an observational cross-sectional
study conducted in Department of Pulmonary Medicine, AVBRH, Sawangi. Here we studied 100 newly and previously diagnosed
patients of chronic obstructive pulmonary disease by spirometry and compare the incidence of lung cancer in these patients. Results:
Out of 100 patients of newly and previously diagnosed COPD, 9 patients have lung cancer. In this 9 patients of lung cancer 6
(66.66%) were already diagnosed COPD and 3 (33.33%) were newly diagnosed COPD. Most of them 8 (88.89%) patients of lung
cancer were smokers. Squamous cell carcinoma were the most common histological type found in 6(66.66%) patients followed by
Adenocarcinoma in 2 (22.22%)patients and only 1 patient has Small cell carcinoma. Conclusion: There is increased risk of
development of lung cancer in previously diagnosed COPD patients than newly diagnosed COPD patients with smoking is the
common factor.
Keywords: : Chronic obstructive pulmonary disease, lung cancer, spirometry