History of primary sclerosing colitis. Evaluate for lesion or dominant stricture. ABDOMEN:LIVER, BILIARY TRACT: Mild irregular narrowing of the central biliary tree and confluence of the right bile duct compatible with primary sclerosing cholangitis without a new dominant stricture or enhancing mass lesion. The appearance is similar to the prior study.The previously identified lobular lesion in the inferior right lobe of the liver is best seen on postcontrast imaging measuring approximately 1.6 cm (series 13/32), essentially unchanged. The lesion remains isointense on portal venous and delayed/equilibrium phase imaging and retains contrast on hepatobiliary phase imaging, compatible with focal nodular hyperplasia.Scattered small cysts.SPLEEN: No significant abnormality noted.PANCREAS: No significant abnormality noted.ADRENAL GLANDS: No significant abnormality noted.KIDNEYS, URETERS: No significant abnormality noted.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.Benign lesion in the right lobe of liver is unchanged and is compatible with focal nodular hyperplasia.2.Mild biliary irregularity appearing similar to the prior compatible with primary sclerosing cholangitis without a dominant stricture or focal lesion.