With the increasing attention of the public to health, more and more lung nodules have been discovered, and the association between lung nodules and lung cancer has also attracted widespread attention. I mentioned in a previous popular science** that although lung nodules have the potential to develop into lung cancer, most of them are actually benign and only a few are malignant. However, for some people at high risk of lung cancer, the appearance of lung nodules should be paid enough attention. First of all, those who suffer from diseases such as lung infections, tuberculosis, chronic obstructive pulmonary disease, etc., have a relatively high probability of malignant transformation of their lung nodules. Damage to lung tissue from these disorders may increase the risk of malignant nodules. Therefore, such people should be alert immediately after the discovery of lung nodules and have regular follow-up examinations under the guidance of a medical professional. 
Secondly, people with a family history of lung cancer are also at high risk of lung cancer. Clinical data shows that people who have lung cancer in their families have a significantly increased chance of developing lung cancer. This may be related to genetic factors, so this group of people should pay more attention to the detection of pulmonary nodules and take timely interventions. Finally, long-term smokers are also at high risk of lung cancer. A variety of carcinogens contained in cigarettes may stimulate malignant transformation of cells within lung nodules. Therefore, smokers should quit smoking as soon as possible and have regular lung examinations to reduce the risk of malignant transformation of lung nodules. 
For these three groups of people, once pulmonary nodules are detected, they should be paid great attention to, and regular reexaminations should be carried out under the guidance of professional doctors. Early intervention and the ability to reduce the likelihood of malignant transformation of pulmonary nodules. At the same time, improving lifestyle habits, quitting smoking and limiting alcohol, maintaining a healthy lifestyle, and improving one's own immunity are also important measures to prevent lung cancer. Although lung nodules do not necessarily progress to lung cancer, regular lung check-ups are essential for people with a high incidence of lung cancer. Through scientific prevention and early prevention, we can effectively reduce the incidence and mortality of lung cancer, improve the rate, and escort people's health.