{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,24]],"date-time":"2026-02-24T07:49:43Z","timestamp":1771919383632,"version":"3.50.1"},"reference-count":22,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2021,12,21]],"date-time":"2021-12-21T00:00:00Z","timestamp":1640044800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["frontiersin.org"],"crossmark-restriction":true},"short-container-title":["Front. Surg."],"abstract":"<jats:p><jats:bold>Background:<\/jats:bold> The aim of this prospective study was to assess the safety and effectiveness of self-expanding metal ureteral stent (MUS) for the treatment of recurrent ureteral stricture after ureteroplasty.<\/jats:p><jats:p><jats:bold>Methods:<\/jats:bold> We prospectively included 24 patients who underwent MUS implantation between February 2019 and August 2020. The inclusion criteria for the procedure were recurrent ureteral strictures after ureteroplasty. A paired <jats:italic>T<\/jats:italic> test was used to compare continuous variables before and after surgery.<\/jats:p><jats:p><jats:bold>Results:<\/jats:bold> A total of 24 patients were finally included in this study. The stricture site was most common on the proximal ureter 19 (79.2%), followed by distal ureter 4 (16.7%) and middle ureter 1 (4.2%). The median length of ureteral stricture is 2.5 (range 1\u201318) cm. The median operative time was 51.5 min, and the median hospital stay time after surgery was 3 days. Post-operative complication included pain 1 (4.2%), urinary tract infection 2 (8.3%) and hematuria 2 (8.3%). After a median follow-up of 12 months, 19\/24 (83.3%) patients were clinically and radiologically successful. We endoscopically adjusted or exchanged the failed stents. The volume of hydronephrosis (124.7 \u00b1 132.5 vs. 66.4 \u00b1 73.2 cm<jats:sup>3<\/jats:sup>, <jats:italic>P<\/jats:italic> = 0.015), blood creatinine level (104.5 \u00b1 45.4 vs. 80.1 \u00b1 23.2 \u03bcmol\/L, <jats:italic>P<\/jats:italic> = 0.044) and urea nitrogen level (6.9 \u00b1 2.4 vs. 4.8 \u00b1 1.5 mmol\/L, <jats:italic>P<\/jats:italic> = 0.003) decreased significantly after a median follow-up of 12 months.<\/jats:p><jats:p><jats:bold>Conclusions:<\/jats:bold> MUS is a safe and effective way to manage recurrent ureteral strictures after ureteroplasty. This technique provides a new choice for the treatment of recurrent stricture.<\/jats:p>","DOI":"10.3389\/fsurg.2021.765810","type":"journal-article","created":{"date-parts":[[2021,12,21]],"date-time":"2021-12-21T05:10:46Z","timestamp":1640063446000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":8,"title":["Initial Experience of Self-Expanding Metal Ureteral Stent in Recurrent Ureteral Stricture After Ureteroplasty"],"prefix":"10.3389","volume":"8","author":[{"given":"Xiaoshuai","family":"Gao","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jixiang","family":"Chen","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zhongyu","family":"Jian","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Menghua","family":"Wang","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Wei","family":"Wang","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Liao","family":"Peng","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zhenghuan","family":"Liu","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xin","family":"Wei","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1965","published-online":{"date-parts":[[2021,12,21]]},"reference":[{"key":"B1","doi-asserted-by":"publisher","first-page":"603","DOI":"10.1007\/s11255-020-02689-3","article-title":"Minimally invasive (laparoscopic\/robotic) ureteroplasty for long segment proximal and mid ureteral strictures","volume":"53","author":"Wang","year":"2021","journal-title":"Int Urol Nephrol."},{"key":"B2","doi-asserted-by":"publisher","first-page":"1516","DOI":"10.1016\/j.juro.2014.02.2589","article-title":"Completely intracorporeal robotic renal autotransplantation","volume":"192","author":"Gordon Z","year":"2014","journal-title":"J Urol."},{"key":"B3","doi-asserted-by":"publisher","first-page":"31","DOI":"10.1007\/s11934-018-0781-4","article-title":"Robotic autotransplantation and management of post-transplant anastomotic strictures: the future is here","volume":"19","author":"Kroczak","year":"2018","journal-title":"Curr Urol Rep."},{"key":"B4","doi-asserted-by":"publisher","first-page":"419","DOI":"10.1016\/j.eururo.2017.11.015","article-title":"Robotic ureteral reconstruction using buccal mucosa grafts: a multi-institutional experience","volume":"73","author":"Zhao L","year":"2018","journal-title":"Eur Urol."},{"key":"B5","doi-asserted-by":"publisher","first-page":"1430","DOI":"10.1016\/j.juro.2017.06.097","article-title":"Robotic ureteroplasty with buccal mucosa graft for the management of complex ureteral strictures","volume":"198","author":"Lee","year":"2017","journal-title":"J Urol."},{"key":"B6","doi-asserted-by":"publisher","first-page":"1523","DOI":"10.1089\/end.2012.0279","article-title":"A new self-expanding, large-caliber ureteral stent: results of a multicenter experience","volume":"26","author":"Moskovitz","year":"2012","journal-title":"J Endourol."},{"key":"B7","doi-asserted-by":"publisher","first-page":"79","DOI":"10.1186\/s12894-019-0510-4","article-title":"Ureteric stent versus percutaneous nephrostomy for acute ureteral obstruction - 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