PMC6461055_01
Axial view of CT scan with contrast showing delayed nephrogram and hydronephrosis of both collecting systems (see arrows) on the right kidney.
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The patient also had moderate right hydroureteronephrosis of both renal moieties with delayed nephrogram and transition point within the proximal common right ureter (Figs. 1 and 2).
Sagittal view of CT scan with contrast showing a hydronephrotic bifid ureter (red line indicating boundary between two ureteral segments) with enhancement at bifurcation (see arrow).
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The patient also had moderate right hydroureteronephrosis of both renal moieties with delayed nephrogram and transition point within the proximal common right ureter (Figs. 1 and 2).
Retrograde pyelogram showing bifurcation at the proximal ureter (yellow arrow) with reduced flow through the more proximal ureteral segments (lower pole:green arrow, upper pole:red arrow) indicating partial obstruction.
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Right retrograde pyelogram showed a filling defect at the proximal ureter with reduced amount of contrast moving in two levels more proximally, corresponding to a partially duplicated system (Fig. 3).