Robert L. Lebowitz, M.D. Children' s Hospital, Harvard Medical School Boston, Massachusetts

5-year-old boy who had bilateral nephtrectomy for Wilms tumor.  On Peritoneal dialysis.  Pre-transplant VCUG showed reflux into unused ureteral stumps  (Figure 1) .  This is a not uncommon phenomenon.  When there is no efflux of urine down the ureter, there is a greter likelihood for reflux up the ureter.

He also had extravasation of contrast material from the unused bladder at the right UV junction (Figure 2).  This is a benign, self-limited, clinically unimportant phenomenon that sometimes occurs when a VCUG is done in an unused bladder.  The patient has no symptoms from the extravasation and it does not affect the subsequent transplant.
 
 

REFERENCES:

1.  Teele RL, Lebowitz RL.  Reflux into the unused ureter.  J Urol 1976;  115:310-313.

2.  Caroline DF, Pollack HM, Banner MP, Schneck C.  Self-limiting extravasation in the unused urinary bladder.  Radiology 1985;
155:311-313.