Severe congenital midureteral dilatation
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Updated: Jul 17, 2026

Assessing Urinary Tract Junction Obstruction Defects by Methylene Blue Dye Injection
Published on: October 12, 2017
Juan C Prieto1, Miguel Castellan, Rafael Gosalbez
1Division of Pediatric Urology, Department of Urology, Miami Children Hospital and Jackson Memorial Hospital, University of Miami, Miami, FL 33155, USA. jcprietos@hotmail.com
Abstract:
Congenital midureteral stricture is an uncommon cause of prenatal hydronephrosis, and it is generally associated with proximal hydroureteronephrosis . We report a unique case of a congenital severe midureteral dilatation associated with mild proximal ureteral dilatation and normal distal ureteral diameter. The dilated midureter was excised, and an open end-to-end ureteroureterostomy was performed. Follow-up 6 months after surgical correction revealed marked improvement in the left-sided hydronephrosis and complete resolution of the hydroureter.
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