A Multiple-center Study on the Effect of Different Ways of Lymph Node Dissection on the Prognosis of Ground Glass Nodules Smaller Than 3cm and With More Than 50% Solid Components

Inclusion Criteria: 1. Aged between 18 and 75 years; 2. GGO is diagnosed by lung CT and failure to subside after 3 months (the patient having been re-examined by thin-section CT); 3. The maximum diameter of the GGO is smaller than 3cm; 4. The maximum diameter of the solid component in the GGO is more than 50%; 5. The patient is able to undergo the lobectomy 6. The patient is able to understand and comply with the study and has provided written informed consent. Exclusion Criteria: \- Patients meeting any of the following criteria are not eligible for this trial: 1. Patients with a history of using immunosuppressive or hormonal drugs; 2. Patients receiving radiotherapy or chemotherapy; 3. Patients who fail to comply with our follow-up strategy; 4. Other situations that are not in conformity with the standards and requirements of this trial.