[The coexistence of vesicoureteral reflux and ureteropelvic junction obstruction in children].

From January 1982 to December 1990, there were 229 cases with 337 ureters having vesicoureteral reflux (VUR). Thirteen of them (3.86%) were also found to have ureteropelvic junction (UPJ) obstruction in the same ureter. They were categorized into three groups based on the therapeutic implications. Group 1 (two ureters) underwent pyeloplasty. Group 2 (two ureters) received both pyeloplasty and reimplantation. The remaining nine ureters having VUR and pseudo-obstruction fell into group 3, and two of them became true UPJ obstruction eventually. We stressed the importance of evaluating upper urinary tract in all refluxed ureters with inappropriately dilated renal pelvis. By doing that we can avoid unnecessary surgery and prevent complications from wrong sequence of operation to a least extent.