{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,11,9]],"date-time":"2026-11-09T03:28:44Z","timestamp":1794194924820,"version":"4.8.0"},"reference-count":26,"publisher":"SAGE Publications","issue":"9","license":[{"start":{"date-parts":[[2026,5,24]],"date-time":"2026-05-24T00:00:00Z","timestamp":1779580800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"funder":[{"name":"the Ministry of Health & Welfare, Republic of Korea","award":["grant number: HI19C0595"],"award-info":[{"award-number":["grant number: HI19C0595"]}],"id":[{"id":"https:\/\/ror.org\/00vxgjw72","id-type":"ROR","asserted-by":"crossref"}]}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Journal of Endourology"],"published-print":{"date-parts":[[2026,9,1]]},"abstract":"\n Purpose:<\/jats:title>\n Clinical evidence directly comparing silicone-covered metallic ureteral stents with polymeric polyurethane Double-J stents for managing malignant ureteral obstruction remain limited. To evaluate the efficacy and safety of silicone-covered metallic stents compared with Double-J stents in patients with malignant ureteral obstruction.<\/jats:p>\n <\/jats:sec>\n \n Methods:<\/jats:title>\n \n This prospective, randomized, open-label, single-center, single-surgeon trial (January 2020\u2013November 2023) enrolled 65 patients (76 ureters) with malignant ureteral obstruction. Patients were randomized 1:1 to receive either a silicone-covered metallic stent (\n n<\/jats:italic>\n = 38) or a Double-J stent (\n n<\/jats:italic>\n = 38). Patency rates at 6 months post-procedure were assessed as the primary end point. The secondary endpoints included technical success, patency rate, adverse event rate, and patient discomfort, which was measured using the Ureteral Stent Symptom Questionnaire.\n <\/jats:p>\n <\/jats:sec>\n \n Results:<\/jats:title>\n \n The patency survival rate was significantly higher in the silicone-covered stent group (\n p<\/jats:italic>\n = 0.0024), with the control group exhibiting a 5.621 times higher risk of occlusion at 6 months (95% confidence interval 1.588\u201319.899,\n p<\/jats:italic>\n = 0.0074). Both groups had comparable adverse events and discomfort rates, although the silicone-covered stent group reported a superior global quality of life (QoL) at 3 and 6 months.\n <\/jats:p>\n <\/jats:sec>\n \n Conclusions:<\/jats:title>\n In patients with malignant ureteral obstruction, silicone-covered metallic stents demonstrated superior patency maintenance and global QoL scores compared with Double-J stents, with no significant difference in safety or patient satisfaction. These findings suggest that silicone-covered stents may be a viable alternative for enhancing long-term ureteral patency and patient QoL.<\/jats:p>\n <\/jats:sec>","DOI":"10.1177\/08927790261451821","type":"journal-article","created":{"date-parts":[[2026,5,25]],"date-time":"2026-05-25T05:13:31Z","timestamp":1779686011000},"page":"1032-1040","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":2,"title":["Randomized Controlled Trial to Evaluate the Efficacy and Safety of Silicone-Covered Metallic Mesh Stent Compared to Conventional Polymeric Stent in Malignant Ureteral Obstruction Patients"],"prefix":"10.1177","volume":"40","author":[{"given":"Deok Hyun","family":"Han","sequence":"first","affiliation":[{"name":"Department of Urology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chung Un","family":"Lee","sequence":"additional","affiliation":[{"name":"Department of Urology, Chungang University College of Medicine, Chungang University Gwangmyeong Hospital, Gwangmyeong-si, Korea."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9729-3457","authenticated-orcid":false,"given":"Jae Hoon","family":"Chung","sequence":"additional","affiliation":[{"name":"Department of Urology, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, Anyang, 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