RADIOLOGY: GENITOURINARY: GU: Case# 33005: URETERAL VARICES. This 45-year-old female has had multiple outside IVPs demonstrating multiple filling defects in both collecting systems, left greater than right. 1. The multiple filling defects on the IVPs that resolve on the retrograde study are most likely secondary to multiple varices pressing on the left collecting system that abuts the ureters and spans from the pelvis to the distal ureter. These varices may be secondary to renal vein stenosis at the junction of the left renal vein with the IVC. 2. Bilateral breast implants.