PMC3914125_01
Abdominal computed tomography featuring the aorta with surrounding soft tissue mass.
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She underwent an abdominal computed tomography scan (Figure 1) which incidentally identified a confluent soft tissue mass tracking along the retroperitoneum encasing the surrounding vessels.
Retrograde pyelogram demonstrating evidence of extrinsic compression and medial deviation of the right ureter.
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The next morning she underwent a retrograde pyelogram demonstrating bilateral hydronephrosis, extrinsic compression, and medial deviation of the ureters, particularly on the right (Figure 2).
Surgical pathology showing inflammation.
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Surgical pathology confirmed tissue consistent with inflammation and ruled out any evidence of malignancy thus making the final diagnosis idiopathic retroperitoneal fibrosis (Figure 4).