MP42-10 SELF-EXPANDING LARGE CALIBER URETERAL STENTS FOR TREATMENT OF IDIOPATHIC URETERAL STRICTURE

Abstract

You have accessJournal of UrologyCME1 Apr 2023MP42-10 SELF-EXPANDING LARGE CALIBER URETERAL STENTS FOR TREATMENT OF IDIOPATHIC URETERAL STRICTURE Hyun Soo Lee, Sun Tae Ahn, Wonku Hwang, Seon Beom Jo, Jong Wook Kim, Mi Mi Oh, Hong Seok Park, and Du Geon Moon Hyun Soo LeeHyun Soo Lee More articles by this author , Sun Tae AhnSun Tae Ahn More articles by this author , Wonku HwangWonku Hwang More articles by this author , Seon Beom JoSeon Beom Jo More articles by this author , Jong Wook KimJong Wook Kim More articles by this author , Mi Mi OhMi Mi Oh More articles by this author , Hong Seok ParkHong Seok Park More articles by this author , and Du Geon MoonDu Geon Moon More articles by this author View All Author Informationhttps://doi.org/10.1097/JU.0000000000003280.10AboutPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissionsReprints ShareFacebookLinked InTwitterEmail Abstract INTRODUCTION AND OBJECTIVE: Treatment for the idiopathic ureteral stricture has not yet been established. Recently, efficacy of self-expanding large caliber stent (Allium, Allium LTD, Israel) for ureteral stricture related to surgery, radiation or malignancy was reported. This study aims to investigate the effect of Allium stent on idiopathic ureteral stricture. METHODS: From July 2018 and January 2022, 54 patients with 58 renal units were underwent ureteroscopic balloon dilation and placement of Allium stent. All the patients showed hydronephrosis before the stenotic lesion and pain. In all the patients, we used, 12 cm or 20cm length of self-expanding Allium ureteral stent and inserted retrogradely with intraoperative x-ray guidance after dilation of the stricture (Figure 1). The primary outcome was immediate improvement in pain and improvement in hydronephrosis through ultrasound examination at 1 month after the procedure. And the secondary outcome was stricture resolution rates following stent removal. RESULTS: Patients and ureteral stricture characteristics were summarized in Table 1. Of 54 patients, 20cm stent was inserted in 47 patients and 12cm stent was inserted in 7 patients. After median follow-up period of 16.5 months, 39.7 % (23/58) of stents were kept in situ. Median indwelling time was 10months (range 1-37) and stent migration was observed in 8 cases (13.8%). All the patients were immediately free of pain after the procedure, and through ultrasound examination, improvement of hydronephrosis was confirmed in 53 out of 58 renal units. Among the 42 renal units which stent removal was performed, 13 renal units (31.0%) recurred stricture. Logistic analysis showed that stricture length was a significant predicting factor for stent failure (HR 2.75, 95% CI 1.58, 4.79, p<0.01) CONCLUSIONS: Self-expanding allium ureteral stenting showed efficacy in relieving pain and improving hydronephrosis in idiopathic ureter stricture with minimal risk of complication. Overall success rate after stent removal was associated with preoperative stricture lengths. Source of Funding: None © 2023 by American Urological Association Education and Research, Inc.FiguresReferencesRelatedDetails Volume 209Issue Supplement 4April 2023Page: e570 Advertisement Copyright & Permissions© 2023 by American Urological Association Education and Research, Inc.MetricsAuthor Information Hyun Soo Lee More articles by this author Sun Tae Ahn More articles by this author Wonku Hwang More articles by this author Seon Beom Jo More articles by this author Jong Wook Kim More articles by this author Mi Mi Oh More articles by this author Hong Seok Park More articles by this author Du Geon Moon More articles by this author Expand All Advertisement PDF downloadLoading ...