Renal mass seen on CT. ABDOMEN:LIVER, BILIARY TRACT: The liver is normal in morphology and size without a focal lesion. Normally distended gallbladder. No biliary ductal dilatation. Mild steatosis.SPLEEN: The spleen is normal in size and morphology. Note is made of a 1.8 cm splenule adjacent to the inferior margin of the spleen.PANCREAS: No significant abnormality noted.ADRENAL GLANDS: No significant abnormality noted.KIDNEYS, URETERS: 2.7 x 2.0 cm lesion along the dorsomedial aspect of the right renal interpolar region demonstrates T2 weighted isointensity to the renal cortex (series 4/21) and intrinsic T1 weighted hyperintensity (series 12/57). It has intrinsic T1 weighted hyperintensity. The subtraction images appear well aligned and show that there is no definite post-contrast enhancement of the lesion. The wall of the lesion is relatively smooth without distinct mural nodularity.Additional subcentimeter renal cysts are noted.No hydroureteronephrosis.RETROPERITONEUM, LYMPH NODES: Infrarenal abdominal aortic aneurysm measuring 3.1 cm in AP dimension with extensive asymmetric atherosclerotic plaque.BOWEL, MESENTERY: No significant abnormality noted.BONES, SOFT TISSUES: No significant abnormality noted.OTHER: No significant abnormality noted.
1.The right renal lesion is intrinsically T1 hyperintense without evidence of enhancement on subtraction imaging, compatible with a hemorrhagic or proteinaceous cyst without suspicious nodularity.2.Infrarenal abdominal aortic aneurysm measuring 3.1 cm in AP dimension.