Lobectomy Increases Postoperative Pulmonary Artery Enlargement to a Greater Extent than Segmentectomy

• DOI: 10.5761/atcs.oa.24-00083
• Publication Date: 2025-01-27T22:11:56Z
• Authors: Megumi Nishikubo; Yugo Tanaka; Shinya Tane; Daisuke Hokka; Yoshimasa Maniwa

The underlying mechanism why segmentectomy has demonstrated the non-inferiority to lobectomy in several randomized trials remains unclear. Computed tomography (CT)-measured pulmonary artery (PA) enlargement reflects PA pressure and predicts prognosis of certain respiratory diseases. We compared preoperative postoperative diameter ascending aorta (PA/A) ratio, investigating its impact on right ventricular function lung resection. This retrospective study was conducted patients with lower-lobe tumors who underwent anatomical resection between 2017 2022. at bifurcation same CT image slice were measured preoperatively postoperatively. calculated PA/A ratio (PA/A change) segmentectomy. analysis included 279 (235 44 segmentectomy). change significantly greater than (104% vs. 102%, P = 0.02). In multivariable analysis, airflow obstruction (yes, 0.04) type surgery (segmentectomy, independent prognostic factors for change. could reflect a burden after lobectomy.