P2.07B.05 Prospective Comparative Study of Postoperative Respiratory Function after Lobectomy Versus Segmentectomy

Preservation of postoperative respiratory function is one of the important indicators for expanding the indications for segmentectomy. In a recent Japan Clinical Oncology Group (JCOG) 0802 trial, the difference in the median reduction of forced expiratory volume in 1 second (FEV1) between lobectomy and segmentectomy at 12 postoperative months was only 3.5%. As there have been few reports comparing postoperative respiratory function by resected lobes or segments, we conducted this prospective non-randomized study at our institution.