Incomplete Renal Duplex System with Lower Moiety Hydroureteronephrosis Due to Aberrant Blood Vessel

Abstract

Introduction

Duplex collecting system is a common congenital urinary system anomaly and is usually asymptomatic. Vascular variations associated with a duplex system are common but haven’t been reported as obstructive.

Case report

14-month-old female had a right sided incomplete ureteral duplication complicated by lower pole hydroureteronephrosis due to distal ureteral obstruction by an aberrant vessel crossing the bifid ureters at ureteric junction of these bifid ureters. Prenatal imaging detected right hydronephrosis. Magnetic resonance suggested a diagnosis of duplicated ureters. At surgery, an aberrant artery compressed the lower moiety ureter at the bifid ureteric junction. The stenotic section was resected and ureter segments were anastomosed. The occluding small artery was not resected to preserve vascularization.

Discussion/Conclusion

An anatomical vascular variation can cause proximal ureteral dilatation and segmental hydronephrosis in a bifid system.

Keywords:

• Duplex collecting system
• hydroureteronephrosis
• lower moiety
• ureteral obstruction
• aberrant vessel
• children

Disclosure statement

No potential conflict of interest was reported by the authors.

Funding

The author(s) reported there is no funding associated with the work featured in this article.