Reason: patient with retroperitoneal fibrosis around aorta. Has had CT abdomen before. Evaluate for any progression/ improvement. ABDOMEN:LIVER, BILIARY TRACT: Punctate T2 hyperintense lesion in segment II is suggestive of a benign cyst. No additional focal hepatic lesion is identified. There is no abnormal enhancement. The gallbladder is normal. There is no intra or extra hepatic biliary ductal dilatation.SPLEEN: A small splenule is noted.PANCREAS: No significant abnormality noted.ADRENAL GLANDS: No significant abnormality noted.KIDNEYS, URETERS: The right kidney again appears atrophic with small renal cysts. Additional punctate T2 hyperintense lesions in the left kidney also are compatible with benign cysts. There is no hydronephrosis.RETROPERITONEUM, LYMPH NODES: Again seen is infrarenal periaortic and aortocaval soft tissue density, which extends inferiorly, to the level of the aortic bifurcation, which appears minimally improved when compared to the prior study accounting for differences in technique.BOWEL, MESENTERY: No significant abnormality noted.BONES, SOFT TISSUES: No significant abnormality noted.OTHER: No significant abnormality noted.
Retroperitoneal fibrosis encasing the infrarenal aorta/IVC and inferior mesenteric artery appears minimally improved.