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Updated: Jul 16, 2026

Assessing Urinary Tract Junction Obstruction Defects by Methylene Blue Dye Injection
Published on: October 12, 2017
[Giant ureterohydronephrosis of the lower segment due to obstructive megaureter in a context of ureteropelvic
Nicolas Vedrine1, Bonaventure Nsabimbona, Paulo Soares
1Service d'urologie, hôpital Gabriel Montpied, CHU Clermont-Ferrand, France.
Abstract:
Ureterohydronephrosis of the lower segment in a context of ureteric duplication is a rare entity and is usually associated with vesicoureteric reflux. The authors report the case of a 35-year-old woman with giant ureterohydronephrosis of the lower segment secondary to partial ureteric duplication due to primary megaureter discovered in a context of infection. After primary percutaneous drainage of the collection, treatment consisted of partial nephrectomy with preservation of the good quality upper segment.
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