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Neoureterocystostomy for the management of extramural ectopic ureter with concurrent contralateral renal aplasia in two dogs
  1. Luca Bresciani1,
  2. Josep Aisa2,
  3. Jonathan Bray3,
  4. Audrey Petite3 and
  5. Susanna Spence1
  1. 1University of Glasgow Small Animal Hospital, School of Veterinary Medicine, College of Medical, Veterinary & Life Sciences, Glasgow, UK
  2. 2North Downs Specialist Referrals, Bletchingley, UK
  3. 3Fitzpatrick Referrals Oncology and Soft Tissue Ltd, Guildford, UK
  1. Correspondence to Dr Luca Bresciani; luca.bresciani20{at}


Two male puppies were presented: one with urinary incontinence and the other with abdominal distension and discomfort. A diagnosis of unilateral extramural ectopic ureter with associated hydronephrosis/hydroureter and contralateral renal aplasia was confirmed in both patients by a combination of abdominal imaging and exploratory coeliotomy. Both patients were also diagnosed with cryptorchidism ipsilateral to the renal aplasia. Routine investigations, including complete blood count, biochemistry and urinalysis, were otherwise unremarkable. Neoureterocystostomy with an intravesical technique and castration were performed in both patients. One month following surgery, severity of clinical signs, the degree of hydronephrosis/hydroureter and elevation of renal blood values had all improved in both patients.

  • dogs
  • hydronephrosis
  • male
  • ectopic ureter
  • extramural
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  • Contributors LB: collected data, reviewed the literature and wrote the article. JA: surgeon case 1, edited final version. JB: surgeon case 2. AP: imager case 2, revised imaging and supervised writing imaging part. SS: internal medicine clinician case 1, edited final version.

  • Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

  • Competing interests None declared.

  • Patient consent for publication Not required.

  • Provenance and peer review Not commissioned; externally peer reviewed.

  • Data sharing statement No additional data are available.

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