{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,9]],"date-time":"2026-01-09T14:49:29Z","timestamp":1767970169848,"version":"3.49.0"},"reference-count":30,"publisher":"Wiley","issue":"9","license":[{"start":{"date-parts":[[2024,8,2]],"date-time":"2024-08-02T00:00:00Z","timestamp":1722556800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["World j. surg."],"published-print":{"date-parts":[[2024,9]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>Sarcopenia affects the postoperative prognosis of patients with colorectal cancer (CRC). Recently, it has become possible to measure psoas volume from computed tomography images, and an index called psoas volume index (PVI) has been reported. However, it is unclear whether the dynamics of PVI before and after surgery is associated with clinical outcomes after CRC surgery. This study aimed to evaluate the association between pre\u2010 and postoperative PVI dynamics and clinical outcomes after CRC surgery.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>This study analyzed 1115 patients diagnosed with primary CRC and operated on for treatment between January 2014 and December 2017. Sarcopenia was defined as PVI below the lowest tertile in the preoperative assessment for each sex. The overall population was divided into four groups according to the dynamics of sarcopenia from preoperative to postoperative: group 1 (pre\u2010to postoperative sarcopenia), group 2 (preoperative nonsarcopenia to postoperative sarcopenia), group 3 (pre\u2010to postoperative nonsarcopenia), and group 4 (pre\u2010to postoperative nonsarcopenia).<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Based on pre\u2010 and postoperative sarcopenia dynamics, 343 patients (29.7%) were classified into group 1, 105 patients (9.1%) into group 2, 42 patients (3.6%) into group 3, and 665 patients (57.6%) into group 4. Comparison of overall survival (OS) by the Kaplan\u2013Meier method showed that Group 2 tended to have the worst prognosis (<jats:italic>p<\/jats:italic>\u00a0=\u00a00.007). Multivariate analysis showed an increased OS risk in Group 2 in sarcopenia dynamics (Hazard ratio: 2.103, 95% CI: 1.202\u20133.681, <jats:italic>p<\/jats:italic>\u00a0=\u00a00.009).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Sarcopenia dynamics using PVI is an independent prognostic predictor of OS in patients with CRC.<\/jats:p><\/jats:sec>","DOI":"10.1002\/wjs.12302","type":"journal-article","created":{"date-parts":[[2024,8,3]],"date-time":"2024-08-03T05:11:56Z","timestamp":1722661916000},"page":"2098-2108","source":"Crossref","is-referenced-by-count":3,"title":["Clinical utility of sarcopenia dynamics assessed by psoas muscle volume in patients with colorectal cancer"],"prefix":"10.1002","volume":"48","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6336-9305","authenticated-orcid":false,"given":"Tomotaka","family":"Kumamoto","sequence":"first","affiliation":[{"name":"Department of Colorectal Surgery National Cancer Center Hospital  Chuo\u2010ku Tokyo Japan"},{"name":"Department of Surgery The Jikei University School of Medicine  Chuo\u2010ku Tokyo Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yasuyuki","family":"Takamizawa","sequence":"additional","affiliation":[{"name":"Department of Colorectal Surgery National Cancer Center Hospital  Chuo\u2010ku Tokyo Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mototaka","family":"Miyake","sequence":"additional","affiliation":[{"name":"Department of Diagnostic Radiology National Cancer Center Hospital  Chuo\u2010ku Tokyo Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Manabu","family":"Inoue","sequence":"additional","affiliation":[{"name":"Department of Colorectal Surgery National Cancer Center Hospital  Chuo\u2010ku Tokyo Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Konosuke","family":"Moritani","sequence":"additional","affiliation":[{"name":"Department of Colorectal Surgery National Cancer Center Hospital  Chuo\u2010ku Tokyo Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shunsuke","family":"Tsukamoto","sequence":"additional","affiliation":[{"name":"Department of Colorectal Surgery National Cancer Center Hospital  Chuo\u2010ku Tokyo Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ken","family":"Eto","sequence":"additional","affiliation":[{"name":"Department of Surgery The Jikei University School of Medicine  Chuo\u2010ku Tokyo Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yukihide","family":"Kanemitsu","sequence":"additional","affiliation":[{"name":"Department of Colorectal Surgery National Cancer Center Hospital  Chuo\u2010ku Tokyo Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2024,8,2]]},"reference":[{"key":"e_1_2_9_2_1","doi-asserted-by":"publisher","DOI":"10.3322\/caac.21601"},{"key":"e_1_2_9_3_1","doi-asserted-by":"publisher","DOI":"10.3322\/caac.21660"},{"key":"e_1_2_9_4_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.suronc.2017.09.006"},{"key":"e_1_2_9_5_1","doi-asserted-by":"publisher","DOI":"10.1016\/s0140\u20106736(09)60318\u20104"},{"key":"e_1_2_9_6_1","doi-asserted-by":"publisher","DOI":"10.1002\/ags3.12570"},{"key":"e_1_2_9_7_1","doi-asserted-by":"publisher","DOI":"10.1093\/ageing\/afq034"},{"key":"e_1_2_9_8_1","doi-asserted-by":"publisher","DOI":"10.1016\/s1470\u20102045(10)70218\u20107"},{"key":"e_1_2_9_9_1","doi-asserted-by":"publisher","DOI":"10.1016\/s1470\u20102045(08)70153\u20100"},{"key":"e_1_2_9_10_1","doi-asserted-by":"publisher","DOI":"10.1002\/bjs.9258"},{"key":"e_1_2_9_11_1","doi-asserted-by":"publisher","DOI":"10.1038\/bjc.2012.350"},{"key":"e_1_2_9_12_1","doi-asserted-by":"publisher","DOI":"10.1111\/codi.13067"},{"key":"e_1_2_9_13_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.surg.2016.05.002"},{"key":"e_1_2_9_14_1","doi-asserted-by":"publisher","DOI":"10.1007\/s11605\u2010015\u20102835\u2010y"},{"key":"e_1_2_9_15_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1477\u20102574.2022.00301.x"},{"key":"e_1_2_9_16_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jamcollsurg.2010.03.039"},{"key":"e_1_2_9_17_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jvs.2010.10.111"},{"key":"e_1_2_9_18_1","doi-asserted-by":"publisher","DOI":"10.1007\/s11605\u2010012\u20101923\u20105"},{"key":"e_1_2_9_19_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ejso.2022.02.024"},{"key":"e_1_2_9_20_1","volume-title":"Union for International Cancer Control: TNM Classification of Malignant Tumours","author":"Brierley J. 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