How often to review CT after surgical removal of a lung nodule requires dynamic follow-up depending on the nature of the nodule. If the nodule itself is benign, a follow-up chest CT once a year after surgery is sufficient. If the nodule is malignant at the time of resection, or if the nodule is diagnosed as lung cancer, a follow-up CT of the chest once every three months is needed to find out whether the nodule has a tendency to recur, especially whether changes such as pulmonary tissue pulling, bronchial dilatation, pleural thickening, and pleural effusion occur after surgery. If there is liquid pneumothorax or hemopneumothorax it needs to be given active treatment to avoid other infectious complications. Therefore, after surgical resection of pulmonary nodules, if it is a benign nodule, a yearly follow-up CT visit is sufficient. If it is caused by malignant nodules with complications such as liquid pneumothorax and hemopneumothorax, it is recommended to follow up the chest CT once every three months to detect any tendency of recurrence at an early stage.