[Comparative assessment of clinical efficacy of percutaneous transhepatic metal versus plastic biliary stent implantation for malignant biliary obstruction: a multi-centered investigation].
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.
Guo
Yuan-xing
YX
Department of Interventional Radiology, Nanfang Hospital, First Military Medical University, Guangzhou 510515, China. guoyuanxing@netease.com
Li
Yan-hao
YH
Chen
Yong
Y
Yu
Zhi-jian
ZJ
Chen
Ping-yan
PY
Luo
Peng-fei
PF
Li
Yong
Y
Shan
Hong
H
Jiang
Zai-bo
ZB
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
D001663:Bilirubin