Ahmed HG, Abboh EAA, Alnajib AMA, Elhussein GEMO, Binsaleh NK, Mustafa SA, Abdalla RAH, Babiker AYY, Mohammed MSA. Is sputum cytology reliable for detection of atypical lung epithelial proliferative changes triggered by cigarette smoking?
INTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL PATHOLOGY 2021;
14:618-626. [PMID:
34093947 PMCID:
PMC8167489]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Accepted: 03/22/2021] [Indexed: 06/12/2023]
Abstract
BACKGROUND
In recent years, Saudi Arabia has witnessed major tobacco smoking-related disease, such as cardiovascular disease and cancer, particularly among the younger population.
METHODOLOGY
The present study aimed at evaluating the effect of cigarette smoke on lung epithelial cells.
RESULTS
This was a cross-sectional case-control study involving 300 apparently healthy volunteers living in Ha'il, Northern Saudi Arabia. Cigarette smokers (N = 100) were used as cases, and non-smokers (N = 200) were used as controls. A sputum specimen was obtained from each participant, employing all necessary safety precautions and sample adequacy measures.
RESULTS
Among 300 study subjects, cytologic atypia was identified in 14/300 (4.7%). Among the 14 cases with atypical cytologic changes, 13/14 (92.9%) were in smokers and 1/14 (7.1%) was in a non-smoker. The risk of lung cytologic atypia associated with cigarette smoking, was OR (95% CI) = 29.73 (3.82-230.87), P = 0.0001. Out of 300 study subjects, metaplasia was identified in 45/300 (15%). Among 45 cases with metaplastic changes, 26/45 (57.8%) were in the smokers and 19/45 (42.2%) were in non-smokers. The risk of lung epithelial metaplasia associated with cigarette smoking was OR (95% CI) = 3.34 (1.74-6.41), P = 0.0003.
CONCLUSION
Cigarette smoking is a significant risk for developing lung epithelial atypia, lung metaplasia, and inflammatory cell infiltrate (especially chronic inflammation). Sputum cytology is a simple, non-invasive method that can be used in screening at-risk populations for early detection of lung proliferative changes associated with tobacco smoking.
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