shows missing calyces at the top of the left kidney and a mass in the bladder.
The remaining calyces on the left have the appearance of a 'drooping flower'.
These findings are typical of an ectopic ureterocele with a non-functioning
upper moiety and a large ureterocele in the bladder where the ectopic ureter
opens.The lower moiety ureter seen on the IVU is displaced laterally by the
dilated ectopic ureter which contains urine but no contrast medium.Treatment is
by partial nephroureterectomy to remove the upper moiety & ureter together
with either complete excision of the ureterocele from the bladder or simple
endoscopic incision. The latter is often preferred because excision may
compromise the other (normal) ureter which often then requires reimplantation.