{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,6]],"date-time":"2026-02-06T23:58:00Z","timestamp":1770422280589,"version":"3.49.0"},"reference-count":22,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2023,12,22]],"date-time":"2023-12-22T00:00:00Z","timestamp":1703203200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Int J of Urology"],"published-print":{"date-parts":[[2024,4]]},"abstract":"<jats:sec><jats:title>Objectives<\/jats:title><jats:p>This study aimed to investigate the influence of tract location on surgical outcomes in endoscopic combined intrarenal surgery (ECIRS), considering the location of residual stones.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>From January 2015 to December 2021, 1417 consecutive patients underwent ECIRS in three hospitals. After excluding patients with preoperative percutaneous nephrostomy, intended multi\u2010stage procedures, those with a tract in the renal pelvis, and those with multiple tracts, 1000 patients were retrospectively analysed by comparing three groups based on tract location: group 1 (upper calyx), group 2 (middle calyx), and group 3 (lower calyx). A multivariate logistic regression model was implemented to assess whether the tract location independently affected the stone\u2010free status.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Patient characteristics were significantly different among the groups in terms of age, stone laterality, presence of calyceal stones, and hydronephrosis. There were no differences in stone\u2010free rate (SFR) among the three groups. Multivariate analysis indicated that the tract location (group 1 or 2 compared with group 3) did not significantly affect the stone\u2010free status (odds ratio\u2009=\u20091.4, 0.9\u20131.9, <jats:italic>p<\/jats:italic>\u2009=\u20090.066). Surgical duration significantly varied among the groups, with the shortest time observed in group 1. Organ injury was observed exclusively in group 1 (1.13%). Residual fragments were predominantly found in the lower calyx, with the calyx associated with the tract being the second most common location.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Tract location does not significantly affect SFR. To improve the SFR, observation of the lower calyx and tract placement is important.<\/jats:p><\/jats:sec>","DOI":"10.1111\/iju.15363","type":"journal-article","created":{"date-parts":[[2023,12,22]],"date-time":"2023-12-22T10:34:02Z","timestamp":1703241242000},"page":"349-354","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Influence of tract location on the outcomes of endoscopic combined intrarenal surgery: A retrospective analysis of 1000 cases"],"prefix":"10.1111","volume":"31","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1416-4877","authenticated-orcid":false,"given":"Tadashi","family":"Tabei","sequence":"first","affiliation":[{"name":"Department of Urology Fujisawa Shounandai Hospital  Fujisawa Kanagawa Japan"},{"name":"Department of Urology Yokosuka Kyosai Hospital  Yokosuka Kanagawa Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hiroki","family":"Ito","sequence":"additional","affiliation":[{"name":"Department of Urology Yokosuka Kyosai Hospital  Yokosuka Kanagawa Japan"},{"name":"Department of Urology Yokohama City University Graduate School of Medicine  Yokohama Kanagawa Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8818-952X","authenticated-orcid":false,"given":"Takaaki","family":"Inoue","sequence":"additional","affiliation":[{"name":"Department of Urology Hara Genitourinary Hospital  Kobe Hyogo Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Takahiko","family":"Watanabe","sequence":"additional","affiliation":[{"name":"Department of Urology Yokosuka Kyosai Hospital  Yokosuka Kanagawa Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tetsuo","family":"Fukuda","sequence":"additional","affiliation":[{"name":"Department of Urology Ohguchi Higashi General Hospital  Yokohama Kanagawa Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2162-7756","authenticated-orcid":false,"given":"Fukashi","family":"Yamamichi","sequence":"additional","affiliation":[{"name":"Department of Urology Hara Genitourinary Hospital  Kobe Hyogo Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3950-1358","authenticated-orcid":false,"given":"Junichi","family":"Matsuzaki","sequence":"additional","affiliation":[{"name":"Department of Urology Ohguchi Higashi General Hospital  Yokohama Kanagawa Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kazuki","family":"Kobayashi","sequence":"additional","affiliation":[{"name":"Department of Urology Yokosuka Kyosai Hospital  Yokosuka Kanagawa Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2023,12,22]]},"reference":[{"key":"e_1_2_14_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.juro.2016.05.091"},{"key":"e_1_2_14_3_1","unstructured":"SkolarikosA JungH NeisiusA Pet\u0159\u00edkA SomaniB TaillyT et\u00a0al.EAU guidelines on urolithiasis.2023[cited 2023 July 8]. 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