"A noninvasive plasma microRNA signature classifier combined with low-dose CT was associated with a fivefold reduction in the false-positive rate for lung cancer detection compared with CT alone, according to results of a retrospective study.
"The analysis included 939 smokers enrolled in the Multicenter Italian Lung Detection trial who had been assigned low-dose CT (n=652) or observation (n=287)."
Editor's Note: Sometimes a doctor believes he/she has detected lung cancer in a patient, but the patient is later found not to have lung cancer. This is known as a "false positive." Scientists tested a new lung cancer detection procedure to see if it reduced the risk of false positives. The procedure combines CT scans with molecular testing of a patient's blood sample for substances that could indicate the presence of lung cancer. It found that the new procedure worked better than CT scans alone.