Table 2 Perioperative data of the patients

Extensive pleural adhesion, n (%)

5 (25.0)

3 (30.0)

2 (20.0)

0.605

Surgical procedures, n (%)

0.144

  Lobectomy

13 (65.0)

6 (60.0)

7 (70.0)

  Segmentectomy

5 (25.0)

4 (40.0)

1 (10.0)

  Mass resection

2 (10.0)

0

2 (20.0)

Initial surgical planning, n (%)

 < 0.001*

  Uniportal VATS

9 (45.0)

9 (90)

0

  Two-port VATS

11 (55.0)

1 (10)

10 (100)

Conversion of the surgical approach, n (%)

6 (30.0)

0

6 (60.0)

0.003*

  Three-port VATS

4 (20.0)

0

4 (40.0)

  Thoracotomy

2 (10.0)

0

2 (20.0)

Disconnection of aberrant vessels, n (%)

0.531

  Endo-stapler

17 (85.0)

9 (90.0)

8 (80.0)

  Ligation using silk

3 (15.0)

1 (10.0)

2 (20.0)

Mean operation time (range), min

131.5 ± 39.8 (75–220)

108.5 ± 24.9 (75–150)

154.5 ± 39.4 (100–220)

0.006*

Estimated blood loss (range), mL

92.5 ± 40.6 (50–200)

85.0 ± 41.2 (50–150)

100.0 ± 40.8 (50–200)

0.424

Postoperative complications, n (%)

4 (20.0)

1 (10.0)

3 (30.0)

0.264

  Pulmonary infection

1 (5.0)

0

1 (10.0)

  Prolonged air leakage (> 5 days)

1 (5.0)

1 (10.0)

0

  Chylothorax

1 (5.0)

0

1 (10.0)

  Bronchopleural fistula

1 (5.0)

0

1 (10.0)

Duration of the chest tube (range), d

6.8 ± 2.8 (3–15)

7.8 ± 3.4 (3–13)

7.2 ± 3.3 (4–15)

0.485

Total thorax drainage volume (range), mL

1233.8 ± 771.8 (350–3150)

926.0 ± 450.0 (350–1850)

1541.5 ± 918.9 (550–3150)

0.073

Postoperative hospital stay (range), d

8.9 ± 3.9 (4–19)

8.0 ± 3.5 (4–16)

9.6 ± 4.2 (5–19)

0.312

Pathological diagnosis, n (%)

0.315

  PS

19 (95.0)

9 (90.0)

10 (100)

  Carcinoma within the PS

1 (5.0)

1 (10.0)

0

30-days mortality

0

0

0

–

Follow up (range), month

35.3 ± 19.0 (5–75)

32.6 ± 20.2 (5–75)

38.0 ± 18.3 (12–70)

0.539

Recurrence of cough or hemoptysis

0

0

0

–