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Lung Cancer Risk Assessment

Combine age, smoking history, exposures, and comorbidities to estimate relative risk category and screening eligibility. This tool supplements—not replaces—clinician judgement.

Packs per day × years smoked.

Enter 0 for current smokers.

First-degree family history of lung cancer
COPD or emphysema
Occupational exposure (asbestos, silica, diesel)
Significant radon exposure

Risk Summary

Risk category

High risk

Risk significantly elevated—strongly consider LDCT screening and aggressive risk reduction.

LDCT screening eligibility

Eligible

Meets USPSTF criteria for annual low-dose CT screening.

Risk factors contributing to this assessment:

  • Age 62
  • Current smoker
  • 35 pack-years

Risk categories approximate relative risk based on published models (e.g., PLCOm2012, USPSTF guidelines). Exact risk percentages require validated calculators with additional clinical data.

How to Use This Calculator

Determine packs per day × years smoked and years since quitting. Even light smoking increases risk, but pack-years guide screening decisions. COPD, family history, and occupational exposures further elevate risk; document these carefully. Use results to counsel on LDCT screening eligibility, smoking cessation, and mitigation of occupational/radon exposures.

Frequently Asked Questions

The score provides a qualitative risk category inspired by validated models. For precise 6-year risk, use PLCOm2012 or other validated calculators that incorporate additional variables. Adults 50–80 years with ≥20 pack-years who currently smoke or quit within the past 15 years should receive annual low-dose CT screening. Chronic radon exposure is a significant additive risk, particularly in smokers. Mitigation of home radon is recommended. Current evidence focuses on combustible cigarettes. Document vaping separately and monitor evolving guidelines. Discontinue LDCT after 15 years of abstinence, when life expectancy is limited, or when patient cannot undergo curative surgery.