Hi and thanks for the query, Considering the fact that the nodule is not evolving, that is not increasing in size or spreading or causing any local symptoms, it is almost obvious that it should be a real cause for invasive investigation now. However, a clinical and paraclinical evaluation, to evaluate the integrity of nearby structures is compelling. Good enough that the chest X ray shows nothing new, other structures that are usually generally affected by lung tumours are the bones. A measurement of blood calcium levels and serum alkaline phosphatase could be important. For now, I suggest you need to be calm and follow your doctors recommendations simply, being very keen anyway to report any new findings deemed abnormal to your physician. Thanks and best regards, Luchuo, MD.