A: Some of the nodules or masses found in the lungs on physical examination may be benign, such as those with diabetes who are prone to tuberculosis ball due to decreased resistance, and some inflammatory pseudotumors of the lungs, cryptococcosis, nodular disease, pulmonary malformation tumors and so on. However, for those who have family history and long-term smoking history, they should be highly alert to the possibility of lung cancer. At present, surgery is the most effective and the best treatment for early stage lung cancer, and it is also the standard treatment that is widely recognized internationally, so it is important to seize the opportunity and strive for early surgery to achieve the best treatment effect.