Go back and redo the mammogram and whatever else they want. I get a mammogram every year and almost 4 years ago they found cancer. It was very small and I had to have the lump removed and 35 radiation treatments. Because of the breast cancer the oncologist did a CT scan and found lung cancer. I had surgery on my lung and it was also very small. God blessed me with very good doctors and I have been cancer free for almost 4 years.