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y the indicators that influence the surgical choice between lobectomy and sublobar resection. The aggravation of COPD was accompanied by an increase in the incidence of respiratory system complications postoperatively, especially atelectasis. For patients with moderate to extremely severe grades of COPD, careful perioperative evaluation should be performed to identify the indicators that influence the surgical choice between lobectomy and sublobar resection. In recent years, the number of clinical practice guidelines (CPGs) for lung cancer has