He said that is a higher rate of overdiagnosis than he would have predicted, but that the study shows how much understanding of cancer has evolved. Decades ago, “every cancer was a bad cancer,” he said.
Now it’s known that certain cancers, including many prostate cancers, grow so slowly that they never need treatment.
The American College of Radiology said in statement Monday that the earlier study showed lung cancer screening significantly reduces lung cancer deaths in high-risk patients and that the benefit “significantly outweighs the comparatively modest rate of overdiagnosis” found in the new analysis.
Low-dose CT scans are the only test shown to reduce lung cancer deaths in high-risk smokers, the radiology group said, adding, “Overdiagnosis is an expected part of any screening program and does not alter these facts.”