Fig. 13.

A 39-year-old male undergoing further work-up after incidental finding of bilateral hydroureteronephrosis on imaging performed for unrelated symptoms. a Excretory phase coronal image demonstrates bilateral complete ureteral duplication with hydronephrosis of bilateral upper moieties (arrows) with insertion of the upper pole ureters onto the prostatic urethra (arrowhead). b Additional coronal reformatted image demonstrates the upper pole hydroureter (arrow) and normal lower pole ureter (arrowhead). c Excretory phase axial image again demonstrates ectopic insertion of the upper pole ureters onto the prostatic urethra (arrow)