title: Percutaneous transhepatic biliary metal stent for malignant hilar obstruction: results and predictive factors for efficacy in 159 patients from a single center.
abstract: OBJECTIVE
  To investigate and compare the efficacy and safety of percutaneous transhepatic biliary stenting (PTBS) using a one- or two-stage procedure and determine the predictive factors for the efficacious treatment of malignant hilar obstruction (MHO).
  
  
  METHODS
  159 consecutive patients with MHO who underwent PTBS were enrolled between January 2010 and June 2013. Patients were classified into one- or two-stage groups. Independent predictors of therapeutic success were evaluated using a logistic regression model.
  
  
  RESULTS
  108 patients were treated with one-stage PTBS and 51 patients were treated with two-stage PTBS. The stents were technically successful in all patients. Successful drainage was achieved in 114 patients (71.4 %). A total of 42 early major complications were observed. Re-interventions were attempted in 23 patients during follow-up. The cumulative primary patency rates at 3, 6, and 12 months were 88, 71, and 48 %, respectively. Stent placement using a one- or two-stage procedure did not significantly affect therapeutic success, early major complications, median stent patency, or survival. A stent placed across the duodenal papilla was an independent predictor of therapeutic success (odds ratio = 0.262, 95 % confidence interval [0.107-0.642]). Patients with stents across papilla had a lower rate of cholangitis compared with patients who had a stent above papilla (7.1 vs. 20.3 %, respectively, p = 0.03).
  
  
  CONCLUSIONS
  The majority of patients with MHO who underwent one-stage PTBS showed similar efficacy and safety outcomes compared with those who underwent two-stage PTBS. Stent placement across the duodenal papilla was associated with a higher therapeutic success rate.
authors.affiliation: Department of Digestive Interventional Radiology, Xijing Hospital of Digestive Diseases, Fourth Military Medical University, 127 West Chang le Road, Xi'an, 710032, China, lmw_jack@china.com.cn.
authors.forename: Mingwu
authors.initials: M
authors.lastname: Li
authors.forename: Ming
authors.initials: M
authors.lastname: Bai
authors.forename: Xingshun
authors.initials: X
authors.lastname: Qi
authors.forename: Kai
authors.initials: K
authors.lastname: Li
authors.forename: Zhanxin
authors.initials: Z
authors.lastname: Yin
authors.forename: Jianhong
authors.initials: J
authors.lastname: Wang
authors.forename: Wenbing
authors.initials: W
authors.lastname: Wu
authors.forename: Luanluan
authors.initials: L
authors.lastname: Zhen
authors.forename: Chuangye
authors.initials: C
authors.lastname: He
authors.forename: Daiming
authors.initials: D
authors.lastname: Fan
authors.forename: Zhuoli
authors.initials: Z
authors.lastname: Zhang
authors.forename: Guohong
authors.initials: G
authors.lastname: Han
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001650:Bile Duct Neoplasms / Q000150:complications*; D001662:Biliary Tract Surgical Procedures; D018281:Cholangiocarcinoma / Q000150:complications*; D002779:Cholestasis / Q000209:etiology / Q000628:therapy*; D005260:Female; D005706:Gallbladder Neoplasms / Q000150:complications*; D006801:Humans; D008297:Male; D008670:Metals; D008875:Middle Aged; D019919:Prosthesis Implantation; D015607:Stents; D016896:Treatment Outcome
chemical_list: D008670:Metals