Large liver mass on outside imaging ABDOMEN:LIVER, BILIARY TRACT: Large T2 hyperintense mass replacing nearly the entire right hepatic lobe, internal heterogeneity and septations seen, measures 17.8 x 13.3 x 20.7 cm (series 3, image 18; series 7, image 17). The mass is T1 hyperintense and exerts mass effect upon the right kidney. Additional T2 hyperintense/T1 hypointense nonenhancing foci are noted throughout the liver, likely cysts. SPLEEN: No significant abnormality noted.PANCREAS: No significant abnormality noted.ADRENAL GLANDS: No significant abnormality noted.KIDNEYS, URETERS: Bilateral renal cysts.RETROPERITONEUM, LYMPH NODES: No significant abnormality noted.BOWEL, MESENTERY: Colonic diverticulosis without evidence of diverticulitis.BONES, SOFT TISSUES: No significant abnormality noted.
Large cystic mass replacing the right hepatic lobe with imaging characteristics suspicious for a biliary cystadenoma/cystadenocarcinoma (particularly given the internal heterogeneity of the structure evident on T2 imaging) or a giant biliary hamartoma, no associated enhancement seen.