Nodules in the lungs should not be ignored, but there is no need to panic. Small nodules in the lungs are not always lung cancer, and there are far fewer malignant tumors than benign lesions. Doctors usually analyze the nodules based on their size and shape and combined with your age and smoking status. Usually, the following conditions are more likely to have lung cancer: age 55 or older; patients with a history of chronic lung disease and family history; small lung nodules >1 cm in diameter; burrs and lobes on the margins; and uneven internal density showing solid nodules or mixed nodules. It is important to note that people with a history of smoking are at high risk for lung cancer, and patients who smoke for years multiplied by the number of cigarettes smoked per day > 400 cigarettes* per year have a significantly higher chance of developing lung cancer. When lung nodules are found during a physical examination, many people are more anxious or even frightened and are not satisfied with the anti-inflammatory treatment and 2-3 month review plan given by their doctors. In fact, many lung nodules are caused by lung infections, such as bacterial bulbar pneumonia, tuberculosis infection, fungal infection, etc. When the infection is controlled, the lung nodules will slowly disappear.