ENDOSCOPIC HIGH PRESSURE BALLOON DILITATION AS A METHOD OF TREATMENT OF URETEROPELVIC JUNCTION OBSTRUCTION IN CHILDREN

Introduction. Background. The development of new medical technologies and the search for minimally invasive methods for the treatment of a number of urological diseases makes us take a fresh look at the tactics of treating ureteropelvic junction obstruction in children. The goal was to determine the efficacy of high-pressure balloon dilatation (HPBD) of ureteropelvic junction (UPJ) in children with hydronephrosis.

Material and Methods. The study included children from different regions of the Russian Federation aged from 2 months to 14 years with a proven ureteropelvic junction obstruction (UPJO) based on a clinical and instrumental examination. Children underwent HPBD of the UPJO zone with its subsequent stenting. The stent was removed after 4-6 weeks. Evaluation of the results was carried out 3-6 months after the stent removal.

Results. The HPBD of the UPJO zone showed a total efficiency of 73%. During the derivation of urine by the stent, clear decompression of the renal collective system was found. Migration of stents and other complications, including urinary tract infections, were not noted. There were an increase in the level of obstruction in 11 (26,8%) patients after stent removal, which required routine surgical treatment by the Heines-Anderson pyeloplasty.

Conclusion. The HPBD has proved to be a technically simple and effective procedure that can become an alternative to open surgery.

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