Formation of pyeloenteroureteroanastamosis in a child with recurrent hydronephrosis caused by long-term ureteral stenosis

Hydronephrosis is a disease characterized by expansion of the renal pelvis and calyces resulted from improper urine outflow in the pelvic ureter that causes damage to the kidney parenchyma and a progressive decrease in its function. Anderson–Hynes pyeloplasty is a highly effective surgical method for this disease. The recurrence rate after this procedure does not exceed 3–5%. One of the possible causes of relapse is long-term ureteral stenosis, which requires a repeated reconstructive surgery. We report a case of recurrent hydronephrosis associated with long-term ureteral stenosis. The patient has undergone laparoscopic surgery with the formation of pyeloenteroureteroanastamosis. Key words: hydronephrosis, relapse, laparoscopy, pyeloenteroureteroanastamosis, pyeloplasty