Nodules found again after lung cancer resection may be caused by lung metastatic cancer, inflammatory nodules in lungs, tuberculosis, etc. They can be treated by oral medicines such as gefitinib, levofloxacin and isoniazid. 1. Lung metastatic cancer: lung cancer can also recur after resection, manifesting as lung nodules. For recurrent lung cancer, radiotherapy and chemotherapy can be adopted, and targeted drugs such as Gefitinib and Crizotinib can also be taken as prescribed by doctors. 2. Inflammatory nodules in lungs: after lung cancer resection, patients are prone to bacterial and viral infections due to low resistance and immunity, which may lead to formation of inflammatory nodules in lungs. Cefaclor, levofloxacin and other antibacterial drugs can be taken as prescribed by doctors. 3. Tuberculosis: after lung cancer resection, patients infected by tuberculosis bacillus can form tuberculosis bacillus foci in lungs, which is manifested as nodules in lungs, and they can take anti-tuberculosis drugs such as isoniazid and rifampicin as prescribed by doctors. If nodules are found after lung cancer resection, patients should go to the hospital in time, improve the examination, and give targeted treatment after clarifying the cause of the disease.