Ok. What if no one looks at the scans? What if I get scanned every month and no one looks at them until I start showing symptoms? My aunt got breast cancer re

Ok. What if no one looks at the scans? What if I get scanned every month and no one looks at them until I start showing symptoms? My aunt got breast cancer recently. She got mammograms every year but the doctors never saw anything. Finally there was a mass discovered, and a when they went back to look at the old images, they could see it growing.