Surgical significance of the duplex kidney with bifid ureter.

Between 1974 and 1990 in 16 children (5 boys and 11 girls) with a duplex kidney and bifid ureter surgery was indicated. The mean age of the 15 already operated patients was 7 years (0.3-12 years). 14 had uretero-ureteric reflux, 1 had a stenosis of the ureteric bifurcation, and 1 had a lower pole pelvi-ureteric junction obstruction. An interpyelic anastomosis was performed in 14 and a ureteroneocystostomy "en bloc" in 1. The follow-up was 3-10 years with a mean of 5 years. All 15 patients had normal uroradiological findings, and out of the 9 patients with longer follow-up (more than 3 years) 7 had a significantly diminished infection rate.