In this study, we also found that the duration of chest tube usage could be decreased in Group 2. Surgical resection and repair of the lacerated lung could stop oozing and micro air leakage faster and hence facilitate early removal of chest tubes. Most of them could be removed within 1 week. This is an important factor to influence the in-hospital LOS. In Group 1 patients, the un-sutured lungs could produce another chance of retained pleural collections again after the first VATS evacuation. Although the incidence rate of secondary retained pleural effusions had no statistical difference between the two groups, we thought Group 1 had a higher rate because of the ease of oozing from the injured lung.