A Multicenter Prospective Randomized Study of Fully Covered Metallic Stent versus Tube Stent in Patients with Borderline Resectable Pancreatic Carcinoma

INTERVENTION: tube stent (more than 8.5 Fr) Fully covered metallic stent (more than 8 mm) CONDITION: Pancreatic carcinoma PRIMARY OUTCOME: Rate of cases who do not need stent exchange until surgical operation or diagnosis of inoperation INCLUSION CRITERIA: Borderline resectable Pancreatic ductal carcinoma case with bile duct stenosis (image diagnosis) Cases planed NAC(R)T more than 2 month PS(ECOG) 0 or 1 Adequate oral intake Estimated life expectancy more than 3 months Without another malignant disease With informed concent