Lung nodules may be caused by inflammation, because not all lung nodules are caused by malignant tumors. 1. Not all lung nodules are caused by malignant tumors in the lungs, lung infection and inflammation may also cause inflammatory nodules, stimulated by inflammation, the nodules may gradually increase in size, even if the inflammation is completely eliminated, the lung tissues may leave different degrees of scarring, so it will be shown as lung nodules through CT examination, so lung nodules may be caused by inflammation. 2. If the lung nodules are caused by infection and inflammation, patients will often experience symptoms such as coughing, coughing up sputum, chest tightness, chest pain, etc., and some patients may also have fever. If you want to accurately analyze the nature of lung nodules, you need to carry out pathological puncture examination as soon as possible, and once malignant lesions are found, treatment should be carried out as early as possible.