Unilateral Complete Ureteral Duplication with Impacted Stone at Ectopic Opening of Upper Moiety Ureter in Posterior Urethra and Simultaneous Bladder Stone: A Rare Entity-Juniper Publishers
Juniper Publishers-Journal of Pediatrics
Abstract
Complete ureteral duplication with ectopic upper
moiety opening into posterior urethra is rare anomalies. This is due to
development of two ureteric bud from mesonephric duct. Development of
stone in this moiety is rare event. Here we are describing a 12 year old
child who presented with left lumbar mass and dysuria. He had left
complete duplex ureter with impacted stone at ectopic opening of upper
moiety ureter in posterior urethra, simultaneous bladder stone and
hydronephrotic non-functioning upper renal moiety. Combined
(cystourethroscopy and open surgical) approach was used for management
of this case.
Keywords: Ectopic ureter; Duplex renal moiety; Stone in duplex kidney
Introduction
Duplex system can be describes as two pelvicaleceal
system with either single lower ureter or double ureter draining into
bladder or outside the bladder (ectopic) [1,2].
Duplex system with double ureter and ectopic opening of upper pole
ureter into proximal urethra (ectopic) is rare anomalies compare to
bifid ureter [1]. Stone formation in duplex system is potential complication [1,3-5]. Combined approach should be used to deal such situation in resource poor setting.
Case Report
Twelve year old male child presented with complain of
colicky pain with mass in left lumbar region and dysuria since 5 month.
No history of fever, hematuria or trauma to abdomen. Examination
revealed single 10cm x 8cm nontender cystic ballotable mass in left
lumbar region. Complete blood count was normal, urea 32mg%, creatinine
0.6mg% Ca 9mg% uric acid 5.6mg% PO4 5.3mg%, urine microscopy 25 pus
cells/HPF, urine culture no growth, Plain X-ray shows two radiopaque
shadow in pelvis (Figure 1),
USG shows Right kidney Normal, Left upper moiety gross hydronephrotic,
left ureter dilated till lower end, lower moiety normal, Stone in
urinary bladder (1.5cm) and Left VUJ (1.6cm). Intravenous urogram (IVU)
and nuclear imaging suggestive of left upper moiety nonfunctioning (Figure 2 & 3), left lower moiety normal. Right kidney normal.
During cystourethroscopy one stone was impacted at
ectopic opening of ureter and projecting into posterior urethra in
curvilinear fashion and another stone in urinary bladder, stone at
ectopic opening was disimpacted and pushed backed into ureter and child
was catheterized. Open left upper pole nephrouretectomy with removal of
ureteral stone and cystolithotomy was performed.
Figure 4
(specimen) showing stone of urinary bladder (upper) and impacted stone
of ectopic ureter (red arrow). Post operatively child recovers well and
on 6 month follow up child was well.
Discussion
Duplex system with double ureter with ectopic opening
of upper moiety ureter into posterior urethra in male child is rare
anomalies [1,6].
In duplex system lower moiety is usually good functioning and upper
moiety having ectopic opening of ureter is hydronephrotic and poor or
nonfunctioning [7,8],
as in our case. Ureteral duplication with ectopic upper moiety ureter
in male child is usually asymptomatic. These duplex systems are
vulnerable for urinary tract infections and urolithiasis. Urinary
calculi are often due to relative stasis of urine but may occur due to
factors unrelated to the duplication. Development of stone in upper
moiety ureter may be due to either obstruction, recurrent infection or
other factor. Treatment of nonfunctioning upper moiety is surgical
removal [7].
Retrieval of large stone per urethrally is difficult
task in setting where lithotripter is not available. In this case we had
to disimpact and push backed the stone into the ureter so that we could
be able to remove stone by open surgery
Duplex moiety with impacted stone in lower end of
upper moiety ureter can be dealed with combined approach (cystoscopy and
open) in resource poor setting.
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