Ureteral duplication

Ureteral duplication is the most common congenital abnormality associated with the urinary tract, and occurs in ~1% of the population.

Gross anatomy

Duplication can occur unilaterally or bilaterally, and may be partial or complete:

  • partially duplicated ureters fuse into a single ureter proximal to the urinary bladder (also known as bifid ureter)
  • in complete duplication, the duplicated ureters may form a ureterocele, ectopic ureter, or orthotopic ureter

Related pathology

Complete duplications are associated with an increased risk for urinary tract infection, obstruction, and vesicoureteral reflux


Anatomy: Abdominopelvic
Share article

Article information

rID: 46122
System: Urogenital
Section: Anatomy
Tag: refs, cases
Synonyms or Alternate Spellings:
  • Ureteric duplication
  • Duplication of the ureter
  • Duplication of the ureters

Support Radiopaedia and see fewer ads

Updating… Please wait.

Alert accept

Error Unable to process the form. Check for errors and try again.

Alert accept Thank you for updating your details.