KEY FACTS Imaging Irregular, periaortic soft tissue mass extending from renal vessels to iliac bifurcation Aorta not typically displaced from spine in primary retroperitoneal fibrosis Soft tissue can surround inferior vena cava and medially displace ureters Soft tissue may extend…
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Relevant Anatomy and Embryology The parietal peritoneum separates the peritoneal cavity from the retroperitoneum. The retroperitoneum contains all the abdominal contents located between the parietal peritoneum and the transversalis fascia. It is divided into 3 compartments by 2 well-defined fascial…
Renal Mass Evaluation CT : Although rapid improvements in scanner technology have resulted in dramatic increases in spatial and temporal resolution, the imaging marker for potential neoplasia (enhancement of soft tissue components of renal masses after contrast administration) has not…