Introduction:

Ureterocalicostomy drains the urine from the lower calyx to the ureter, which should be generously spatulate. To succeed, the anastomosis between the mucosa of the calyx and the ureter must be large without tension. In recent years, this technique has taken place in the primary management of obstruction of the uretero-pelvic junction.

Materials and Methods:

A 14-year-old girl and a 10-year-old boy have giant, symptomatic hydronephrosis with a small pelvic kidney shown by the CT scan. Ureterocalicostomy was performed in both cases with a double ureteral stent. The postoperative course was uneventful, with excellent clinical and radiological results. The follow-up is three months for the girl and two months for the boy. The evolution was good; the patients were asymptomatic with reduction of hydronephrosis.

Conclusion:

Kuss and Anderson's pyeloplasty is the standard procedure for surgery for ureteropelvic junction obstruction. However, in some cases, it is impossible to do so because of abnormalities in the presentation of the ureteropelvic junction or secondary fibrosis after surgery or local trauma. The ureterocalicostomy then becomes a safe and primary procedure to perform in the management of the obstruction of the Ureteropelvic junction.

If it it is well performed, the evolution will be good. Therefore, it should be more popularized in pediatric patients.