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Lung cancer screening — USMLE Step 3 MCQ

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EasyAmbulatory Medicine / Primary CareLung cancer screeningUSMLE Step 3

A 58-year-old woman smoked 1 pack daily from age 20 to 48 and has not smoked for 10 years. She feels well and has no hemoptysis, weight loss, or prior lung cancer. She asks about cancer screening. Which of the following is the most appropriate screening recommendation?

Educational content. Not a substitute for clinical judgement or local policy.

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Correct answer: A — Annual low-dose chest CT

Adults age 50 to 80 years with at least 20 pack-years who currently smoke or quit within 15 years should receive annual low-dose CT screening.

Reference: USPSTF A and B Recommendations, 2025-2026: https://www.uspreventiveservicestaskforce.org/uspstf/recommendation-topics/uspstf-a-and-b-recommendations