Fig. 4From: Liver elasticity assessment after biliary drainage in patients with extrahepatic cholestasis by shear wave sono-elastography (SWE)A 65-year-old male patient with malignant biliary obstruction due to pancreatic neoplasm. a Ultrasound shows hypoechoic pancreatic head mass (arrows). b Ultrasound shows CBD stent placement (arrow) by ERCPBack to article page