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Updated: Oct 24, 2026

A Murine Model of Irreversible and Reversible Unilateral Ureteric Obstruction
Published on: December 20, 2014
[Surgical correction of multiple ureter obstructions in children]
Insights
Congenital hydronephrosis can involve double ureteral obstructions. Surgical resection and anastomosis are effective, especially with microsurgical techniques, for treating these complex cases.
Area of Science:
- Pediatric Urology
- Surgical Innovation
Background:
- Congenital hydronephrosis frequently presents with pyeloureteral obstruction.
- Associated distal ureteral strictures are often overlooked during initial diagnosis.
Observation:
- During operations for congenital hydronephrosis, 10 of 80 patients exhibited secondary distal ureteral strictures.
- These dual obstructions were typically located 1.7-2.0 cm from the pelvioureteral junction.
Findings:
- Resection of the affected segment and formation of an Andersen-Haynes anastomosis proved successful in treating these double obstructions.
- The presence of dual strictures suggests significant dysplastic changes in the ureteral wall.
Implications:
- Microsurgical techniques, including magnification and fine suturing, are recommended for optimal anastomosis outcomes.
- Consideration should be given to expanding retrograde pyelography indications for improved diagnosis of additional ureteral strictures.
Abstract:
Obstruction in the pyeloureteral region is often combined with an obstacle of an anatomical or functional character in the distally located parts of the ureter. The authors treated by operation 80 patients with congenital hydronephrosis in the period from 1986 to 1991. An additional distally located stricture of the ureter was found during intraoperative catheterization in 10 cases. In 9 of 10 cases the obstacle was at a distance of 1.7-2.0 cm from the pelvioureteral junction. Due to the small distance between the strictures the affected segment could be resected and an Andersen-Haynes anastomosis formed. The authors believe that the presence of double obstructions indicates marked dysplastic changes of the ureteral wall. In view of this, the use of optic magnification, microsurgical instruments, and ultrathin suturing material in the formation of the anastomosis is recommended. In 3 children operated on by the above discussed method the postoperative course was uneventful. A clinical case is given in illustration. It is suggested in the discussion that the indications for retrograde pyelography may be widened so as to identify additional strictures of the ureter at the diagnostic stage.
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