All issues > Volume 29(2); 1986

Original Article

J Korean Pediatr Soc. 1986;29(2):170-177. Published online February 28, 1986.

A Clinical Study of Ureteral Duplication : Review of 90 Cases.

Jun Chul Choi¹, Jae Seung Lee¹, Ho Yung Lee², Dae Suk Han², Hyung Ki Choi³, Jin Moo Lee³, Jin Suck Suh⁴

¹Department of Pediatrics, College of Medicine, Yonsei University, Seoul Korea
²Department of Internal Medicine, College of Medicine, Yonsei University, Seoul Korea
³Department of Urology, College of Medicine, Yonsei University, Seoul Korea
⁴Department of Radiology, College of Medicine, Yonsei University, Seoul Korea

Abstract

Ureteral duplication is one of the most common congenital malformations of the urinary tract. Incomplete duplication rarely causes clinical problems, but complete duplication often accompanies complications of a varying degree. We herein analyzed, retrospectively, 90 cases with ureteral duplication who were admitted to Yonsei University Severance Hospital during 13.5 years. There were 28 cases under age of 15 years. Thirty-four cases were male and 56 cases were female. Seventy-nine cases were unilateral and 11 cases were bilateral. In unilateral duplication, duplication developed in 56 cases on the left and 23 cases on the right, and 42 cases were incomplete, 15 cases were complete and 22 cases were not confirmed. The common chief complaints were flank pain(25.6%), fever(14.4%) and hematuria(12.2%). But, 26 cases of duplication had no urinary symptoms or signs. Complications developed in 57% of unilateral incomplete duplication, 87% of unilateral complete duplication, 53.6% under age of 15 years and 38.7% above age of 15 years. Associated abnormalities were hydronephrosis (22.2%), hydroureter (15.6%), stone (13.3%), ureterocele(10.0%), vesicoureteral reflux(10.0%) and ectopic ureter(8.9%). Voiding cystourethrography was done in a total of 13 cases of unilateral complete duplication and bilateral duplication, and vesicoureteral reflux was discovered in 9 cases.

Keywords :Ureteral duplication; Vesicoureteral reflux; Ectopic ureter; Ureterocele