Evaluating efficacy of current lung cancer screening guidelines

Area of Science:

• Pulmonology
• Oncology
• Public Health

Background:

• Lung cancer screening criteria, primarily from the National Lung Screening Trial, may not encompass all at-risk populations.
• Existing guidelines may not adequately identify individuals who could benefit from early lung cancer detection.

Purpose of the Study:

• To assess the effectiveness of current lung cancer screening criteria from the United States Preventive Services Task Force (USPSTF), Centers for Medicare and Medicaid Services (CMS), and National Comprehensive Cancer Network (NCCN) in identifying actual lung cancer cases.
• To determine the proportion of biopsy-proven lung cancer cases that would have met established screening eligibility requirements.

Main Methods:

• A retrospective analysis of 1207 biopsy-proven lung cancer cases diagnosed between 1996 and 2016 at Stony Brook Cancer Center.
• Evaluation of patient data, including age at diagnosis, smoking history (pack-years, cessation date), and other risk factors, against USPSTF, CMS, and NCCN screening criteria.

Main Results:

• Among 1046 ever-smokers, significant proportions were ineligible for screening under National Lung Screening Trial criteria due to age (40%), smoking history (20%), or smoking cessation timing (>15 years prior).
• USPSTF and CMS criteria identified only 49.2% and 46.3% of cases, respectively.
• NCCN criteria identified a higher proportion, 69.8%, of the evaluated lung cancer cases.

Conclusions:

• USPSTF and CMS lung cancer screening guidelines appear to miss a substantial number of actual lung cancer cases, capturing less than 50% in this cohort.
• The findings underscore a critical need to re-evaluate the efficacy and inclusivity of current lung cancer screening guidelines.
• Potential public health implications are significant, suggesting current screening may not be reaching a large segment of the population at risk for lung cancer.