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

Anatomy: Abdominopelvic

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

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