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논문 기본 정보

자료유형
학술저널
저자정보
이재준 (The Catholic University Liver Research Center, College of Medicine, The Catholic University of Korea, Seoul) 최종영 (가톨릭대학교) 이순규 (가톨릭대학교)
저널정보
대한간암학회 Journal of Liver Cancer Journal of Liver Cancer 제24권 제2호
발행연도
2024.9
수록면
253 - 262 (10page)
DOI
10.17998/jlc.2024.06.02

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Backgrounds/Aims: Although cigarette smoking has been associated with an increased risk of hepatocellular carcinoma (HCC), its association with HCC mortality remains underexplored. We aimed to evaluate the effect of smoking on early mortality in HCC patients following curative treatment. Methods: Data from the Korean Primary Liver Cancer Registry were examined for HCC patients who underwent liver resection or radiofrequency ablation between 2015 and 2018. Smoking cumulative dose was assessed in pack-years. The primary outcome was the 3-year overall survival (OS). Results: Among 1,924 patients, 161 were classified as heavy smokers (≥40 pack-years). Heavy smokers exhibited a lower 3-year survival rate (77.1%) than nonsmokers (83.3%), with a significant difference observed in the 3-year OS (P=0.016). The assessment of smoking pack-years in relation to 3-year OS revealed a dose-dependent pattern, with the hazard ratio exceeding 1.0 at 20 pack-years and continuing to rise until 40 pack-years, reaching peak at 1.21 (95% confidence interval, 1.01-1.45). Multivariate Cox-regression analysis revealed heavy smoking, age ≥60 years, underlying cirrhosis, tumor size >3 cm, vascular invasion, and Child-Pugh class B/C as risk factors for 3-year OS. Subgroup analyses of patients with a tumor size <3 cm, absence of vascular invasion, and meeting the Milan criteria also showed inferior outcomes for heavy smokers in all three subgroups. Conclusions: Heavy smoking, defined as a history of >40 pack-years, was linked to poorer 3-year survival outcomes in HCC patients undergoing curative treatments, underscoring the importance of smoking cessation in this population.

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