First, I wish you the best with whatever treatments you may get….docs look for changes in repeated CTs…..many people have nodules, often due to past bronchial infections and the like…also, into case of cancer patients mets, tests like ctDNA and Signatera can indicate cancer shedding in the bloodstream, if any…reading radiology reports really best done with the doc to interpret them for you…you can ask your doc to review the images him or herself. Good luck !