43-year-old woman with history of right upper quadrant pain, leukocytosis, and common duct dilation on ultrasound. ABDOMEN:LIVER, BILIARY TRACT: The liver is normal in signal and morphology. The common bile duct is dilated up to 8 mm in diameter. There is no significant intrahepatic biliary ductal dilatation. There is an 8 mm round filling defect in the distal common bile duct (601/79). No stone in the ampulla.Additionally, the gallbladder is full of stones of varying size including a 21 mm stone at the gallbladder neck (401/29). The gallbladder is distended with small amount of pericholecystic fluid.SPLEEN: No significant abnormality noted.PANCREAS: The pancreas is normal with nondilated pancreatic duct.ADRENAL GLANDS: No significant abnormality noted.KIDNEYS, URETERS: 16 mm T1 hyperintense, T2 hypointense lesion in the upper pole of the left kidney (801/17) likely represents a hemorrhagic or proteinaceous cyst. There is a large right upper pole simple renal cyst.RETROPERITONEUM, LYMPH NODES: No significant abnormality noted.BOWEL, MESENTERY: No significant abnormality noted.BONES, SOFT TISSUES: No significant abnormality noted.OTHER: There is a small amount of perihepatic ascites.
1.8 mm distal common bile duct stone with mild extrahepatic biliary ductal dilatation.2.Large stone in the gallbladder neck with acute cholecystitis.