The goal of lung cancer screening is to detect cancer at an earlier stage and save more lives. Smoking is the No. 1 cause of lung cancer, and it's recommended that anyone over 55 who has a significant history of smoking, even if they no longer smoke, should be screened.

<p>The goal of lung cancer screening is to detect cancer at an earlier stage and save more lives. Smoking is the No. 1 cause of lung cancer, and it's recommended that anyone over 55 who has a significant history of smoking, even if they no longer smoke, should be screened.</p>

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