Understanding Duplication Anomalies of the Kidney

  • Jeanne S. Chow


Learning the basic rules governing duplication anomalies of the kidney is particularly rewarding because the fundamental rules can be applied reliably to the great variety of cases and using all different imaging modalities. Although ultrasound is typically the starting point of imaging of the urinary tract in infants and children, renal duplex anomalies are also studied by micturating cystourethrography (MCU), also called voiding cystourethrography (VCUG), intravenous pyelography (IVP), magnetic resonance urography (MRU), computed tomography (CT), MAG-3 lasix renogram, and DMSA scan. While more and more duplex anomalies are being discovered in utero, most people with duplex anomalies are asymptomatic and thus may never be studied at all.


Distal Ureter Wolffian Duct Magnetic Resonance Urography Ectopic Ureter Ureterovesical Junction 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    Claudon M, Ben-Sira L, Lebowitz RL (1999) Lower pole reflux in children: uroradiologic appearance and pitfalls. AJR 172:795–801PubMedGoogle Scholar
  2. 2.
    Fernbach SK, Zawin JK, Lebowitz RL (1995) Complete duplication of the ureter with ureteropelvic junction obstruction of the lower pole of the kidney: imaging findings. AJR 164: 701–704PubMedGoogle Scholar
  3. 3.
    Carrico C, Lebowitz RL (1998) Incontinence due to an infrasphincteric ectopic ureter: why the delay in diagnosis and what the radiologist can do about it. Pediatric Radiology 28:942–949CrossRefPubMedGoogle Scholar
  4. 4.
    Wyly JB, Lebowitz RL (1984) Refluxing urethral ectopic ureters: recognition by the cyclic voidng cystourethrogram. AJR 142:1263–1267PubMedGoogle Scholar
  5. 5.
    Share JC, Lebowitz RL (1989) Ectopic ureterocele without ureteral and calyceal dilatation (ureterocele disproportion): findings on urography and sonography. AJR 152:567–571PubMedGoogle Scholar
  6. 6.
    Gill RD (1952) Triplication of the ureter and renal pelvis. J Urol 68:140–147PubMedGoogle Scholar

Copyright information

© Springer Verlag Italia 2010

Authors and Affiliations

  • Jeanne S. Chow
    • 1
  1. 1.Departments of Urology and RadiologyChildren’s HospitalBostonUSA

Personalised recommendations