email article Carotid artery stenosis screening still can't be recommended in the absence of symptoms, the U.S. Preventive Services Task Force (USPSTF) concluded. No "substantial" evidence has turned up in the years since its last D-grade recommendation against screening for asymptomatic adults in 2014, argued the group led by Alex H. Krist, MD, MPH, of Virginia Commonwealth University in Richmond. "Using a reaffirmation process, the USPSTF concludes with moderate certainty that the harms of screening for asymptomatic carotid artery stenosis outweigh the benefits," they wrote in They pointed to false-positives with duplex ultrasonography in a general population with low prevalence, inadequate evidence that screening prevents stroke or death, and risk of small to moderate harms from screening for and treatment of asymptomatic cases.