borderline significanceP = 0.066
In the pleurodesis group patients (n = 89), apex-to-cupola distance > 10 mm at POD0–3 showed no significance (83.3% vs 51.8%, P = 0.212) and at POD4–14 only borderline significance (66.7% vs 27.7%, P = 0.066) to postoperative recurrence of PSP.