The American Society for Radiation Oncology (ASTRO) on Friday praised the U.S. Centers for Medicare and Medicaid Services (CMS) for its draft decision in favor of screening seniors at high risk for lung cancer with low-dose CT.
The CMS proposal confirms there is sufficient evidence to warrant screening in asymptomatic individuals 55 to 74 years old who have smoked at least 30 pack-years, or quit smoking in the past 15 years. CMS is accepting public comments on the proposed draft decision until December 10.
ASTRO said it is pleased that CMS decided in favor of screening, potentially reducing seniors' lung cancer mortality by almost 20%. Data indicate that nearly 60% of lung cancer diagnoses are among those who have never smoked or already quit, the organization added.
With a highly effective screening technique in place, patients will be diagnosed earlier when treatment can be most successful, which will save thousands of lives, ASTRO said.

















![Axial images from unenhanced calcium score cardiac CT (left) and curved planar reformation images from CT angiography (right) show that higher long-term exposure to air pollution is associated with greater coronary artery calcium and more obstructive coronary artery disease (CAD). Top row: Images in a 68-year-old male patient with higher 10-year mean ambient air pollution exposure (7.9 μg/m3 for particulate matter measuring ≤2.5 μm in diameter [PM2.5] and 17.4 parts per billion [ppb] for NO2) with extensive CAD (coronary artery calcium score [CACS] >1,000 and obstructive CAD [≥70% diameter stenosis]). Bottom row: Images in a 57-year-old female patient with lower 10-year mean ambient air pollution exposure (6.3 μg/m3 for PM2.5 and 4.6 ppb for NO2) with no CAD (CACS = 0 and no obstructive stenosis).](https://img.auntminnie.com/mindful/smg/workspaces/default/uploads/2026/06/hanneman.r6SMLzkezo.png?auto=format%2Ccompress&fit=crop&h=112&q=70&w=112)


