Lung Cancer Screening in the Community Setting

Area of Science:

• Pulmonology
• Oncology
• Radiology

Background:

• Lung cancer presents a significant global health challenge due to high incidence and mortality, often diagnosed at advanced stages.
• The National Lung Screening Trial (NLST) established the efficacy of low-dose chest computed tomography (CT) in reducing lung cancer mortality among high-risk individuals.
• Replicating NLST findings in real-world community settings remains a key area of investigation.

Purpose of the Study:

• To evaluate the effectiveness of a community-based lung cancer screening program.
• To compare screening outcomes with the results reported in the National Lung Screening Trial.
• To identify factors influencing patient adherence to screening recommendations.

Main Methods:

• A retrospective analysis of a community lung screening program from 2012 to 2016.
• Inclusion of patient demographics, initial screening results, follow-up, and management data.
• Definition of annual adherence as repeat imaging within 1 year (+90 days).

Main Results:

• 1,241 individuals underwent initial screening; 78.6% of findings were benign.
• 29 lung cancers (2%) were detected, with 72% diagnosed at Stage I.
• Annual adherence for repeat low-dose chest CT was 37%, and overall follow-up was 51%; adherence for positive findings requiring further evaluation was 88%.

Conclusions:

• Community-based lung cancer screening programs can achieve comparable early detection rates to the NLST.
• Patient adherence to recommended follow-up imaging requires further investigation and improvement.
• The study highlights the potential of community programs while underscoring the need to address adherence challenges.