In a new study of nearly 1,000 consecutive patients treated for lung cancer at Northwestern Medicine, investigators discovered only 35 percent would have qualified for screening according to the U.S. Preventive Services Task Force (USPSTF) screening criteria. The two-thirds of patients who would have been excluded were disproportionately women and never-smokers. Currently, USPSTF recommends annual lung cancer screenings for adults ages 50-80 who have a 20 pack-year smoking history and currently smoke or have quit within the past 15 years.