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J Cardiothorac Surg. 2011 Feb 25;6:19. doi: 10.1186/1749-8090-6-19.

High prevalence of lung cancer in a surgical cohort of lung cancer patients a decade after smoking cessation.

Author information

1
Division of Hematology Oncology, UCLA David Geffen School of Medicine, 200 UCLA Medical Plaza, Suite 420 Los Angeles, CA 90024 USA. cindymongmd@gmail.com

Abstract

BACKGROUND:

This study was designed to assess the prevalence of smoking at time of lung cancer diagnosis in a surgical patient cohort referred for cardiothoracic surgery.

METHODS:

Retrospective study of lung cancer patients (n = 626) referred to three cardiothoracic surgeons at a tertiary care medical center in Southern California from January 2006 to December 2008. Relationships among years of smoking cessation, smoking status, and tumor histology were analyzed with Chi-square tests.

RESULTS:

Seventy-seven percent (482) had a smoking history while 11.3% (71) were current smokers. The length of smoking cessation to cancer diagnosis was <1 year for 56 (13.6%), 1-10 years for 110 (26.8%), 11-20 years for 87 (21.2%), 21-30 years for 66 (16.1%), 31-40 years for 44 (10.7%), 41-50 years for 40 (9.7%) and 51-60 years for 8 (1.9%). The mean cessation was 18.1 ± 15.7 years (n = 411 former smokers). Fifty-nine percent had stage 1 disease and 68.0% had adenocarcinoma. Squamous cell carcinoma was more prevalent in smokers (15.6% vs. 8.3%, p = 0.028); adenocarcinoma was more prevalent in never-smokers (79.9% versus 64.3%, p = 0.0004). The prevalence of adenocarcinoma varied inversely with pack year (p < 0.0001) and directly with years of smoking cessation (p = 0.0005).

CONCLUSIONS:

In a surgical lung cancer cohort, the majority of patients were smoking abstinent greater than one decade before the diagnosis of lung cancer.

PMID:
21352550
PMCID:
PMC3056729
DOI:
10.1186/1749-8090-6-19
[Indexed for MEDLINE]
Free PMC Article

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