Impact of inferior pulmonary ligament dissection versus preservation during thoracoscopic upper lobectomy: a retrospective comparative analysis.

IPL division was associated with a greater degree of postoperative bronchial angle change after left-sided surgery, reaching borderline significance at 3 months (68.1 ± 7.2° vs. 78.1 ± 7.8°, P = 0.046) and poorer 6-month outcomes, including smaller lung volume (3615 ± 475 mL vs. 3392 ± 489 mL, P = 0.027), a trend towards lower FEV1% (73.04 ± 9.36 vs. 69.06 ± 10.11, P = 0.049), lower DLCO (80.82 ± 10.35 vs. 76.06 ± 11.08, P = 0.033), and lower total LCQ-MC score (17.70 ± 1.72 vs. 16.98 ± 1.69, P = 0.042).

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Although Group D required an additional procedural step (IPL division) and showed longer operative time and greater intraoperative blood loss, these differences did not reach statistical significance.

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However, particularly for outcomes with marginally significant P values, these results should be interpreted with caution due to multiple comparisons.

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