NCCN Guidelines for Patients® | Lung Cancer Screening

16 NCCN Guidelines for Patients ® : Lung Cancer Screening, 2020 3  Should you start now? Find out your level of risk Find out your level of risk Guide 3 lists the criteria for high-, moderate-, and low-risk groups. There are two groups of people who are at high risk for lung cancer. Lung cancer screening is recommended for both high-risk groups. As seen in Guide 3 , the risk groups are divided by age and pack years of smoking. Smoking is based on pack years. A pack year is the number of packs of cigarettes you smoked every day multiplied by the number of years you smoked. Guide 3. People at risk Level of risk Risk factors Screening High risk Group 1 • 55 to 77 years of age • 30 or more pack years of smoking and has quit within the past 14 years • Current smoker Yearly screening is recommended Group 2 • 50 years of age or older • 20 or more pack years of smoking • Other risk factors (other than second-hand smoke) Yearly screening is recommended Level of risk Risk factors Screening Moderate risk • 50 years of age or older • 20 or more pack years of smoking or contact with second-hand smoke • No other risk factors Not recommended Level of risk Risk factors Screening Low risk • 49 years of age or younger and/or • 19 or fewer pack years of smoking Not recommended

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