{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,29]],"date-time":"2026-04-29T22:40:53Z","timestamp":1777502453199,"version":"3.51.4"},"reference-count":32,"publisher":"SAGE Publications","issue":"10","license":[{"start":{"date-parts":[[2015,10,1]],"date-time":"2015-10-01T00:00:00Z","timestamp":1443657600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Acta Radiol"],"published-print":{"date-parts":[[2015,10]]},"abstract":"<jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>A double stent system (covered stent in uncovered stent) was designed to provide long-term patency without tumor ingrowth or stent-related complications, such as stent migration, cholecystitis, or pancreatitis.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Purpose<\/jats:title>\n                    <jats:p>To investigate the safety and efficacy of double stents in patients with malignant extrahepatic biliary obstructions.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Material and Methods<\/jats:title>\n                    <jats:p>This prospective, nonrandomized, multicenter study enrolled 160 consecutive patients (102 men; mean age, 64 years; range, 33\u201391 years) with malignant extrahepatic biliary obstructions treated with a double stent system from January 2010 to March 2012.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>The technical success rate of the double stent placement was 100%. No stent migration was observed. Procedure-related minor (self-limiting hemobilia [ n\u2009=\u20096] and cholangitis [ n\u2009=\u20092]) and major (pancreatitis [ n\u2009=\u200916], cholecystitis [ n\u2009=\u20093], and hepatic abscess [ n\u2009=\u20092]) complications occurred in a total of 29 patients. The mean serum bilirubin level, which was 8.9\u2009\u00b1\u20095.6\u2009mg\/dL before drainage, decreased to 2.2\u2009\u00b1\u20094.6\u2009mg\/dL 1 month after stent placement ( P\u2009&lt;\u20090.001). Successful internal drainage was achieved in 148 patients (92.5%). During the mean follow-up period of 205 days, acute cholecystitis ( n\u2009=\u20093) and hepatic abscess ( n\u2009=\u20092) occurred in five patients. The median patient survival and stent patency time were 135 days (95% confidence interval [CI], 96\u2013160 days) and 114 days (95% CI, 83\u2013131 days), respectively. Of 153 patients, 22 (14.4%) presented with stent dysfunction due to sludge incrustation ( n\u2009=\u200917), tumor overgrowth ( n\u2009=\u20094), or blood clot ( n\u2009=\u20091), and required repeat intervention. Tumor ingrowth was not observed in any of these patients.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>Percutaneous treatment of malignant extrahepatic biliary obstruction using a double stent safely and effectively achieves internal biliary drainage.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/0284185114550702","type":"journal-article","created":{"date-parts":[[2014,9,27]],"date-time":"2014-09-27T02:29:49Z","timestamp":1411784989000},"page":"1209-1215","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":5,"title":["A prospective, multicenter study of a double stent system for palliative treatment of malignant extrahepatic biliary obstructions"],"prefix":"10.1177","volume":"56","author":[{"given":"Jong Woo","family":"Kim","sequence":"first","affiliation":[{"name":"Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Republic of Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Dong I l","family":"Gwon","sequence":"additional","affiliation":[{"name":"Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Republic of Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Young-Min","family":"Han","sequence":"additional","affiliation":[{"name":"Department of Radiology, Chonbuk National University Medical School and Hospital, Republic of Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Je Hwan","family":"Won","sequence":"additional","affiliation":[{"name":"Department of Radiology, Ajou University college of Medicine and Hospital, Republic of Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hyun Pyo","family":"Hong","sequence":"additional","affiliation":[{"name":"Department of Radiology, Sungkyunkwan University School of Medicine, Kangbuk Samsung Hospital, Republic of Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Gi-Young","family":"Ko","sequence":"additional","affiliation":[{"name":"Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Republic of Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hyun-Ki","family":"Yoon","sequence":"additional","affiliation":[{"name":"Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Republic of Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kyu-Bo","family":"Sung","sequence":"additional","affiliation":[{"name":"Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, 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