[The surgical correction of hydronephrosis in children (the late results)].

Surgical interventions on 368 pelviureteral segments were made in 348 hydronephrosis patients under 14 years old. Bilateral disease occurred in 20 patients. Resection of the pelviureteral segment was performed with ureteropyeloplasty according to Anderson-Hynes-Kucera procedure.

[The late results of the surgical treatment of vesicorenal reflux in children].

1-27-year follow-up results are available for 455 patients who at the age of 3 months-14 years were operated on vesicoureteral segments with reflux of the II, III and IV degree. Overall 648 interventions were made, of them 78 according to Grégoir-Lich (54 patients). Good results were obtained in 91.

[The correction of primary megaureter in children. The late results].

The surgical intervention on 261 ureterovesicular segments was performed in 202 patients aged 3 months-14 years. All the patients presented with megaureter varying in forms: refluxing megaureter (147 cases), nonrefluxing megaureter (94 cases), megaureter with ureterocele (20 cases). Histological investigations demonstrated congenital structural changes of the same type to be a morphological basis of diverse megaureter forms.

[Corrective operations in ureterocele in children].

The authors analyze their experience in the treatment of 59 children aged 3 months--14 years with ureterocele of the single (22 patients) and double ureter (37 patients). Examination and surgical data showed that ureterocele in the operated on children was congenital and became a component of a complicated malformation of the distal ureter. Structural changes varied from minimal to total dysplasia reflected in the degree of the ureteral dilatation.