The U.S. Preventive Services Task Force has released draft guidelines recommending the use of low-dose CT scans to spot lung cancer in high-risk smokers and former smokers. Screening should target patients 55 to 80 who smoked one pack daily for 30 years or two packs per day for 15 years, including those who have stopped smoking within the past 15 years. However, annual screenings should be limited to high-risk individuals due in part to potential risk associated with radiation exposure, one of the authors said.

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