The International Agency for Research on Cancer has published its 21st handbook, summarising what the latest evidence shows about the benefits and harms of screening for lung cancer using low-dose CT scans and chest X-rays.
The New England Journal of Medicine has flagged the publication, pointing readers to a new commentary piece that discusses the update’s findings on lung cancer screening — one of the more contested areas in cancer detection, where the potential to catch disease early must be weighed against risks such as false positives and unnecessary procedures.
The IARC Handbooks of Cancer Prevention are considered a key reference point for health policy and clinical guidance internationally. Volume 21 focuses specifically on two screening methods: low-dose computed tomography (a type of detailed X-ray scan that uses a fraction of the radiation of a standard CT) and chest radiography (a conventional chest X-ray). According to the NEJM post, the handbook also assesses tools and strategies aimed at improving how screening programmes are run.
Low-dose CT screening has been the subject of debate among cancer specialists for some years. Proponents point to evidence that it can detect tumours earlier in people at high risk — typically long-term smokers. But critics have raised concerns about overdiagnosis and the anxiety caused by incidental findings that turn out to be harmless.
The full handbook and the accompanying NEJM commentary are available through the journal’s website for clinicians and researchers seeking the detail behind the summary.
Source: @NEJM