Effectiveness and postoperative pain level of single-port versus two-port thoracoscopic lobectomy for lung cancer: a retrospective cohort study.

However, the rate of lymph node dissection was not significantly different between the two groups in our study, although the single-port group showed a trend toward improved outcomes, especially after considering the number of lymph node dissection stations (Table 3 ).

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Results The baseline patient characteristics including sex, age, smoking history, preoperative complications, and pulmonary function were not significantly different between the two groups ( P > 0.05), although the difference in age ( P = 0.065) and the forced expiratory volume in 1 s ( P = 0.088) showed a borderline significance.

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