Korean J Urol.  2010 Jun;51(6):434-437.

Successful Endourologic Management of Lower Pole Moiety Ureteropelvic Junction Obstruction in a Partially Duplicated Collecting System

• Hwang E
• Kim YH
• Yang SW
• Youn CS
• Youk SM
• Sul CK
• Lim JS

Abstract

We present two cases of symptomatic lower pole moiety ureteropelvic junction obstruction (UPJO) in a partially duplicated collecting system that were successfully treated with minimally invasive endourologic procedures. In the first case, we performed retrograde endopyelotomy with the Acucise(R) ureteral cutting balloon device, and in the latter case, we performed percutaneous nephrolithotomy and antegrade endopyelotomy because of the presence of multiple renal stones. Subsequent intravenous pyelography confirmed marked resolution of the obstruction, and both patients remained asymptomatic during 1 year of follow-up.

Keyword

Minimally invasive surgical procedures; Nephrolithiasis

MeSH Terms

Follow-Up Studies
Humans
Nephrolithiasis
Nephrostomy, Percutaneous
Surgical Procedures, Minimally Invasive
Ureter
Urography

Figure

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  FIG. 1 Preoperative retrograde pyelography showing lower pole ureteropelvic junction obstruction with normal upper pole moiety.

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  FIG. 2 The 3-month postoperative IVP showing definite decompression of the lower pole obstruction. IVP: intravenous pyelography.

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  FIG. 3 Preoperative computed tomography showing marked hydronephrosis and multiple renal stones of the lower moiety (A) Computed tomography showing incomplete duplication with dilatation of the right lower pole moiety. (B) Multiple renal stones in the lower pole moiety.

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  FIG. 4 (A) Preoperative retrograde pyelography showing marked dilatation of the right lower pole moiety suggesting UPJO. (B) The 3-month postoperative IVP showing marked reduction of the hydronephrosis in the lower pole moiety. UPJO: ureteropelvic junction obstruction, IVP: intravenous pyelography.

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