History of cholelithiasis status post cholecystectomy now with persistent right upper quadrant pain and elevated alkaline phosphatase. Questionable dropped gallstones on outside hospital CT scan. ABDOMEN:LIVER, BILIARY TRACT: The liver is normal in size, morphology, and parenchymal signal characteristics.There are multiple foci of susceptibility along the liver capsule both anteriorly and posteriorly (series 2101 image 62 and 44). These are presumably postsurgical in etiology and may reflect surgical clips or possibly retained gallstones.There is an additional focus of susceptibility adjacent to the common bile duct near the ampulla (series 2101 image 26). There is no associated enhancement or increased T2 signal. This may represent an additional surgical artifact, stone, or an ampullary diverticulum.SPLEEN: Spleen is normal in size and signal characteristic.PANCREAS: Spleen has normal morphology and signal characteristics. No pancreatic duct dilatation.ADRENAL GLANDS: No significant abnormality noted.KIDNEYS, URETERS: Kidneys are normal in size and signal characteristic. No hydronephrosis.RETROPERITONEUM, LYMPH NODES: No significant abnormality noted.BOWEL, MESENTERY: No significant abnormality noted.BONES, SOFT TISSUES: No significant abnormality noted.OTHER: No significant abnormality noted.
1. Multiple foci of susceptibility along the liver capsule both anteriorly and posteriorly that are presumably postsurgical in etiology and may reflect surgical clips or possibly retained gallstones. Correlation with the patient's outside hospital CT scan would be useful for definitive interpretation.2. Additional focus of susceptibility adjacent to the common bile duct near the ampulla may represent an additional surgical artifact, stone, or an ampullary diverticulum.