title: Percutaneous transhepatic metal versus plastic biliary stent in treating malignant biliary obstruction: a multiple center investigation.
abstract: OBJECTIVE
  To compare the efficacy of metal versus plastic biliary stent implantation in the treatment of malignant biliary obstruction.
  
  
  METHODS
  Percutaneous transhepatic self-expandable metal stent (MS, n=61) and 10F plastic stent (PS, n=34) were placed in 95 patients with malignant biliary obstruction in three 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 survival of the patients and the rates of stent patency.
  
  
  RESULTS
  The 30-day mortality rate was lower in the MS group (6/61, 9.8%) than in the PS group (9/34, 26.5%, P<0.05). The 30-day reobstruction rate and the complication rate were 15.0%, 16.4% in the MS group and 32.4%, 29.4% in the PS group, respectively (P<0.01). The median patency period of stents and median survival period of the patients were 230 days, 224 days in the MS group and 90 days, 94 days in the PS group, respectively (P<0.01).
  
  
  CONCLUSIONS
  Metal stent is clinically superior to plastic stent in the treatment of malignant biliary obstruction.
authors: Department of Interventional Radiology, Nanfang Hospital, First Military Medical University, Guangzhou 510515, China. guoyuanxing@netease.com
authors: Yuan-Xing
authors: YX
authors: Guo
authors: Yan-Hao
authors: YH
authors: Li
authors: Yong
authors: Y
authors: Chen
authors: Ping-Yan
authors: PY
authors: Chen
authors: Peng-Fei
authors: PF
authors: Luo
authors: Yong
authors: Y
authors: Li
authors: Hong
authors: H
authors: Shan
authors: Zai-Bo
authors: ZB
authors: Jiang
mesh_terms: D000328:Adult; D000368:Aged; D001661:Biliary Tract Neoplasms / Q000401:mortality / Q000473:pathology* / Q000628:therapy*; D002404:Catheterization / Q000295:instrumentation* / Q000379:methods; D002760:Cholangiopancreatography, Endoscopic Retrograde / Q000379:methods; D002779:Cholestasis / Q000401:mortality / Q000473:pathology* / Q000628:therapy*; D004867:Equipment Design; D004869:Equipment Safety; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods; D008297:Male; D008670:Metals; D008875:Middle Aged; D010166:Palliative Care; D010969:Plastics; D018570:Risk Assessment; D015607:Stents; D015996:Survival Rate; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome
chemical_list: D008670:Metals; D010969:Plastics