History of gallbladder cancer with involvement of the liver, evaluate for response to treatment. ABDOMEN:LIVER, BILIARY TRACT: There is redemonstration of a previously described heterogeneous mass extending along the hepatic hilum involving segment 5/8 and to lesser extent segment 4A which also involves the superior aspect of the gallbladder wall. The mass demonstrates heterogeneous enhancement as well as internal cystic areas. There is associated subcapsular retraction. The superiormost component of the mass measures approximately 3.6 x 5.7 cm (3/16), unchanged since 3/8/2016 CT when allowing for differences in modality. The mass mildly compresses the main portal and right portal vein, unchanged from prior and without evidence of invasion/thrombosis.Cholelithiasis with several large cholesterol gallstones measuring over 2 cm and with gallstones in the gallbladder neck. Mild diffuse intrahepatic biliary ductal dilatation appearing similar to recent CT. There is mildly increased enhancement as well as thickening along the central intrahepatic bile ducts. No extrahepatic biliary ductal dilatation.SPLEEN: No significant abnormality noted.PANCREAS: No significant abnormality noted.ADRENAL GLANDS: No significant abnormality noted.KIDNEYS, URETERS: Multiple renal cysts which lack suspicious features.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.Mass involving the hepatic hilum and gallbladder, cholangiocarcinoma slightly favored over gallbladder carcinoma.2.Cholelithiasis. Mild intrahepatic biliary ductal dilatation appearing similar to prior.