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Published on: July 8, 2025
[Management endourologic of pyeloureteral junction stenosis]
A Parente Hernández1, J M Angulo Madero, R Romero Ruiz
1Servicio Cirugía Pediátrica, Hospital Infantil Gregorio Marañón, Madrid. parente80@hotmail.com
Insights
Endourologic balloon dilatation is effective for treating pyeloureteral junction (PUJ) obstruction in children. This minimally invasive approach offers a viable option with minimal complications, even for infants.
Area of Science:
- Pediatric Urology
- Minimally Invasive Surgery
- Endourology
Context:
- Pyeloureteral junction (PUJ) obstruction is a common cause of hydronephrosis in children.
- Surgical intervention is often required to relieve the obstruction.
- Endourologic techniques offer a less invasive alternative to open surgery.
Purpose:
- To evaluate the efficacy and safety of endourologic balloon dilatation for treating PUJ obstruction in pediatric patients.
- To assess outcomes including complication rates, hospital stay, and functional improvement.
Summary:
- Seven pediatric patients (9 months to 15 years) with PUJ obstruction underwent endourologic balloon dilatation.
- Procedures involved cystoscopy, retrograde catheter placement, balloon dilatation across the stenosis, and double J stent placement for 6 weeks.
- No intraoperative complications occurred, with a median hospital stay of 2 days. All patients remained asymptomatic with improved renal function and reduced pelvic diameter.
Impact:
- Endourologic balloon dilatation is a safe and effective treatment for pediatric PUJ obstruction.
- This minimally invasive approach is suitable even for infants under one year old.
- The technique leads to significant clinical improvement and avoids the morbidity associated with open surgery.
Objectives:
To report our experience with endourologic methods in the treatment of pyeloureteral stenosis in children.
Materials And Methods:
From July 2004, 7 patients from 9 months to 15 years old with pyeloureteral junction stenosis (PUJ) diagnosis underwent endourologic repair. An endourological dilatation was made under radioscopic control. The procedures consist of an initial cystoscopy with a retrograde placement of catheter (4 or 5 Fr) and the guide wire (0,014''-or 0,035''). The high pressure balloon (3 to 5 Fr) was then railroad over the wire and positioned across the stenosis for dilatation. A double J stent (3 to 6 Fr) was then introduced, remaining it during 6 weeks.
Results:
There was no intraoperative complications. Median inhospital stay was 2 days (range, 2 to 8). The double J stent was removed without complications. All patients are asymptomatic with improvement in excretion times (MAG3 renography) and antero-posterior renal pelvis diameter (ultrasound measurement).
Conclusions:
Balloon dilatation is a viable option in the management of PUJ obstruction even in children under one year old, with minimal morbidity.
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