ABSTRACT
Duplication of the ureter and renal pelvis is the most
common upper urinary tract anomaly with a reported
incidence of 0.8 in the population and in 1.84.2% of pyelograms.15 The vast majority of these anomalies have
normally developed renal moieties and cause no functional
problems. However, they can challenge the diagnostic acu-
men with a wide variety of manifestations. Vesico-ureteral
reflux (VUR) is the most frequently associated anomaly
found in duplex systems. A small proportion of ureteral
duplications is associated with ureteroceles, ectopic ureter,
and pelvi-ureteric junction obstruction.
