The PDQ cancer information summaries are reviewed regularly and updated as new information becomes available. This section describes the latest changes made to this summary as of the date above.

Evidence of Benefit ¹

Added text ² to state that in a randomized controlled lung cancer screening trial in Denmark, all current smokers enrolled in the trial received a minimal smoking cessation intervention; however, after 1 year of follow-up, comparable quit rates were observed in the screened and unscreened groups (cited Ashraf et al. as reference 33).