Renal mass seen on CT. History of lymphoma. ABDOMEN:LIVER, BILIARY TRACT: Multiple bilateral hepatic cysts. No biliary ductal dilatation. Cholelithiasis within a normally distended gallbladder without evidence of acute gallbladder inflammation. The liver is normal in size and signal intensity.SPLEEN: Normal splenic size and intensity without a focal lesion.PANCREAS: Several cystic foci in the pancreatic tail appear to communicate with the main pancreatic duct which is normal in caliber. The largest measures 1 cm (series 7/24). Moderate atrophy of the pancreas without a focal lesion.ADRENAL GLANDS: No significant abnormality noted.KIDNEYS, URETERS: Several bilateral renal lesions are noted, some of which demonstrate slow growth over several years.Some of these lesions measure less than 1 cm, therefore making accurate characterization difficult. There is some suggestion of post-contrast enhancement, such as the lesion in the anterior cortex of the inferior right renal pole (series 11/66).The left renal superior pole 3.5 x 3.5 cm lesion is heterogeneous in signal intensity on T2-weighted imaging. The lesion is intrinsically bright on T1-weighted imaging. The subtraction images are degraded by patient respiratory motion making accurate assessment of postcontrast enhancement difficult with portions of the lesion appearing to enhance. Bilateral renal cysts. 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.The left superior pole lesion is intrinsically bright on T1-weighted imaging and demonstrates slow growth over several years. The subtraction images are degraded by patient respiratory motion making accurate assessment of postcontrast enhancement difficult with portions of the lesion appearing to enhance. A dedicated renal protocol CT may be helpful to better characterize the enhancement of this lesion.2.Two right renal lesions measuring less than 1 cm with some suggestion of postcontrast enhancement. Follow-up imaging is recommended to monitor these lesions.3.Subcentimeter pancreatic tail cystic foci likely represent side branch IPMNs.