title: [Comparative assessment of clinical efficacy of percutaneous transhepatic metal versus plastic biliary stent implantation for malignant biliary obstruction: a multi-centered investigation].
abstract: OBJECTIVE
  To compare the clinical efficacy of metal versus plastic biliary stent implantation for treatment of malignant biliary obstruction.
  
  
  METHODS
  Percutaneous transhepatic implantations of self-expandable metal stent (MS, n=61) or 10F plastic stent (PS, n=34) were performed in 95 patients with malignant biliary obstruction selected from 3 hospitals of Guangdong Province. All patients were followed up until death or at least one year after the procedure. Kaplan-Meier analysis was used to compare the patients' survival and stent patency rates.
  
  
  RESULTS
  The 30-day mortality rate was lower in MS group (6/61, 9.8%) than in PS group (9/34, 26.5%, P<0.05). The 30-day reobstruction rate and incidence of complications were 15.0%, 16.4% in MS group and 32.4%, 29.4% in PS group, respectively (P<0.01). The median patency period of the stents and median survival period of the patients were 230 d, 224 d in MS group and 90 d, 94 d in PS group, respectively (P<0.01).
  
  
  CONCLUSIONS
  Metal stent implantation is superior to plastic stent for treatment of malignant biliary obstruction.
authors.affiliation: Department of Interventional Radiology, Nanfang Hospital, First Military Medical University, Guangzhou 510515, China. guoyuanxing@netease.com
authors.forename: Yuan-xing
authors.initials: YX
authors.lastname: Guo
authors.forename: Yan-hao
authors.initials: YH
authors.lastname: Li
authors.forename: Yong
authors.initials: Y
authors.lastname: Chen
authors.forename: Zhi-jian
authors.initials: ZJ
authors.lastname: Yu
authors.forename: Ping-yan
authors.initials: PY
authors.lastname: Chen
authors.forename: Peng-fei
authors.initials: PF
authors.lastname: Luo
authors.forename: Yong
authors.initials: Y
authors.lastname: Li
authors.forename: Hong
authors.initials: H
authors.lastname: Shan
authors.forename: Zai-bo
authors.initials: ZB
authors.lastname: Jiang
mesh_terms: D000328:Adult; D000368:Aged; D001663:Bilirubin / Q000097:blood; D002779:Cholestasis / Q000401:mortality / Q000628:therapy*; D004322:Drainage; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009369:Neoplasms / Q000150:complications*; D012189:Retrospective Studies; D015607:Stents
chemical_list: D001663:Bilirubin