{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,19]],"date-time":"2026-08-19T16:12:41Z","timestamp":1787155961983,"version":"build-2736575974"},"reference-count":38,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2023,9,23]],"date-time":"2023-09-23T00:00:00Z","timestamp":1695427200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["J cachexia sarcopenia muscle"],"published-print":{"date-parts":[[2023,12]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>Segmentectomy is considered a less invasive procedure than lobectomy for patients with non\u2010small cell lung cancer (NSCLC); however, little is known about the physiological mechanism underlying the lower invasiveness of segmentectomy. This study is aimed to compare the differences in the long\u2010term changes in the psoas muscle mass after segmentectomy and lobectomy in patients with NSCLC.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Overall 315 recurrence\u2010free patients who underwent segmentectomy (<jats:italic>n<\/jats:italic>\u00a0=\u00a093) or lobectomy (<jats:italic>n<\/jats:italic>\u00a0=\u00a0222) for clinical stage 0\u2010I NSCLC between January 2016 and December 2018 and underwent computed tomography during the entire period of 6\u00a0months\u00a0\u2264\u00a0postoperative year (POY) 0.5\u00a0&lt;\u00a012\u00a0months, 12\u00a0months\u00a0\u2264\u00a0POY 1\u00a0&lt;\u00a024\u00a0months, 24\u00a0months\u00a0\u2264\u00a0POY 2\u00a0&lt;\u00a036\u00a0months, and 36\u00a0months\u00a0\u2264\u00a0POY 3\u00a0&lt;\u00a048\u00a0months were included. Bilateral psoas muscle area (PMA) at the L3 level was measured using each cross\u2010sectional computed tomography scan. Differences between the segmentectomy and lobectomy groups in the mean change of postoperative PMA from the preoperative period were analysed using Student's <jats:italic>t<\/jats:italic>\u2010test and mixed analysis of variance. Multivariable\u00a0analysis was performed to identify the risk factors for PMA loss on POY 3 using logistic regression analysis.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The lobectomy group had a significantly larger PMA change than the segmentectomy group during each postoperative period (<jats:italic>P<\/jats:italic>\u00a0&lt;\u00a00.001). Mixed analysis of variance revealed that the mean PMA change was significantly smaller in the segmentectomy group than in the lobectomy group during the observation period (<jats:italic>P<\/jats:italic>\u00a0&lt;\u00a00.001). The mean change in the PMA was significantly larger from POY1 (\u22122.5%) to POY2 (\u22123.9%) and POY3 (\u22124.7%) in the lobectomy group (<jats:italic>P<\/jats:italic>\u00a0=\u00a00.003 and <jats:italic>P<\/jats:italic>\u00a0&lt;\u00a00.001). However, PMA remained unchanged during the postoperative observation period in the segmentectomy group. In the multivariable analysis, the risk factors for PMA change \u2264\u22123.3% (cut\u2010off: mean change of PMA) at POY3 included lobectomy [odds ratio (OR), 3.32; 95% confidence interval (CI), 1.90\u20135.82; <jats:italic>P<\/jats:italic>\u00a0&lt;\u00a00.001], male sex (OR, 1.92; 95% CI, 1.02\u20133.62; <jats:italic>P<\/jats:italic>\u00a0=\u00a00.044) and open thoracotomy (OR, 1.84; 95% CI, 1.11\u20133.05; <jats:italic>P<\/jats:italic>\u00a0=\u00a00.017). After propensity score matching, the mean change in PMA was smaller in the segmentectomy group (<jats:italic>n<\/jats:italic>\u00a0=\u00a075) than in the lobectomy group (<jats:italic>n<\/jats:italic>\u00a0=\u00a075) during the postoperative observation period (<jats:italic>P<\/jats:italic>\u00a0&lt;\u00a00.001).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Psoas muscle mass was better maintained during the postoperative period by segmentectomy than by lobectomy. Psoas muscle mass reduction progressed over a long postoperative period after lobectomy. Segmentectomy via complete video\u2010assisted thoracic surgery is associated with a lower likelihood of sarcopenia progression.<\/jats:p><\/jats:sec>","DOI":"10.1002\/jcsm.13328","type":"journal-article","created":{"date-parts":[[2023,9,23]],"date-time":"2023-09-23T09:09:51Z","timestamp":1695460191000},"page":"2540-2549","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["Long\u2010term changes in psoas muscle mass after lobectomy and segmentectomy for early\u2010stage lung cancer"],"prefix":"10.1002","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-3302-7133","authenticated-orcid":false,"given":"Tetsuya","family":"Isaka","sequence":"first","affiliation":[{"name":"Department of Thoracic Surgery Kanagawa Cancer Center  Yokohama Japan"},{"name":"Department of Surgery Yokohama City University  Yokohama 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