Anatomy An ultrasound examination shows dilated intrahepatic biliary channels with a small gallbladder. The most likely possibility is A Gallbladder stones B Pancreatic calculus C Common bile duct stone D Carcinoma of the head of the pancreas 💡 Explanation An ultrasound examination shows dilated intrahepatic biliary channels with a small gallbladder. The most likely possibility is ✓ Correct Answer: C. Common bile duct stone