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Assessment of individual kidney function in a dog with congenital anomalies of the urinary tract
  1. Evelyn Heier1,
  2. Christine Urban1,
  3. Ahmed Abdellatif1,
  4. Cetina Thiel1 and
  5. Reto Neiger2
  1. 1Small Animal Clinic, Justus-Liebig-University Giessen, Fachbereich Veterinaermedizin, Giessen, Germany
  2. 2Tierklinik Hofheim, Hofheim, Germany
  1. Correspondence to Professor Reto Neiger; reto.neiger{at}


A 21-month-old entire female labrador retriever was presented for polyuria, pollakiuria, haematuria and intermittent urinary incontinence. Clinical signs were absent during antibiotic treatment but reoccurred shortly after completion of a treatment course. Investigations detected bilaterally dilated ureters, right renal hypoplasia, left extramural ectopic ureter and right intramural ectopic ureter forming an ureterocoele. Blood tests revealed moderate renal azotaemia. 99mTc-DMSA (technetium-99m-dimercaptosuccinic acid) scintigraphy was used to quantify individual kidney function to carefully consider nephrectomy. The right kidney contributed to less than 2 per cent of the total kidney function. Individual kidney function assessed by 99mTc-DMSA scintigraphy was compared with CT-based renal parenchyma volume as an equivalent to kidney function. In this case both diagnostic imaging techniques resulted in similar individual kidney function percentages. A right-sided nephroureterectomy and a left-sided neoureterocystostomy were performed. Surgical treatment successfully resolved the clinical signs. After surgery the dog’s chronic kidney disease remained stable at International Renal Interest Society chronic kidney disease stage 3.

  • scintigraphy
  • ureterocele
  • computed tomography (ct)
  • canine
  • ectopic ureter
  • diagnostic imaging
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  • Contributors EH was responsible for case management, AA for diagnostic imaging, CT for surgical correction, CU for case follow-up and RN for case supervision. All wrote and corrected the manuscript.

  • 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.

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

  • Data availability statement No additional data are available.

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