Patency and Safety of the Drug Eluting Covered Biliary Stent Comparing to the Common Covered Biliary Stent

Paclitaxel covered metal biliary stent(Mira-Cover Biliary Stent) extents their patency rate comparing to the Common Covered Metallic Biliary Stent(Niti-S Biliary Stent.

Inclusion criteria

• Patient who is inoperable and/or unresectable cases of pancreatic cancer and/or biliary cancer with mid or distal CBD invasion
• Among patient of a.,Patient who previously had surgical biliary drainage of plastic stent have eligibility

Exclusion criteria

• Patient who have life expectancy under 3 months
• Patient who have severe metastasis of Liver or whole body
• Patient who previously had surgical biliary drainage