Left Retrocaval Ureter around the Ipsilateral Limb of a Double Caudal Vena Cava in a Cat

“…As previously stated, this variant in humans is seen more often and may be associated with hydronephrosis, haematuria and recurrent urinary tract infections, although there has been no reports indicating this association in cats, although some authors observed ureteral strictures caused by this variant [7,10]. Nonetheless, it has been related to these symptoms in dogs [3,7].…”

Section: Discussionmentioning

confidence: 89%

“…In cats, the circumcaval ureter is known to be a rare variant with few case reports in the literature [3,5], although a study conducted by Bélanger et al [2] observed the presence of a circumcaval ureter in 35.2% of 301 cats, while the majority of these variants were right-sided (30.6%), while only 1.3% of the cats had a left circumcaval ureter.…”

Section: Discussionmentioning

confidence: 99%

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Right circumcaval ureter and double right renal vein in the Brazilian shorthair cat (Felis catus): two case reports

et al. 2019

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Variations of the renal veins are well described in the literature, although variations concerning the ureter are considered a rare finding in cats. The circumcaval ureter is one of the rarest variations of the ureter and is characterized by a loop of the ureter posterior to the caudal vena cava, as such, this variant is also known as preureteral vena cava and retrocaval ureter. It is thought to be caused by a deviation during embryonic development of the aforementioned vein. Due to its rarity, there are scarce reports of the circumcaval ureter in cats, and its association with two renal veins makes it less common as well. These variations should be preoperatively identified in order to avoid complications in kidney transplants, ureteral surgeries and cystoscopies, for instance. The present work aims to report two cases of a circumcaval ureter with two renal veins in two different Brazilian shorthair cats (Felis catus).

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Computed tomographic appearance of circumcaval and circumuterine ureter in a cat

Jirasakul

Thammasiri

Darawiroj

et al. 2020

Veterinary Medicine & Sci

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Background Circumcaval ureter is a rare congenital anomaly resulting from the persistence of embryonic venous system. This anomaly is characterized by running of affected ureter around caudal vena cava (CVC). Case presentation In this report, circumcaval ureter was found in a 2‐year‐old female cat attending as normal sample group in another research. This cat passed all health checkup protocols before computed tomography (CT) was performed. Conclusion The contrast‐enhanced computed tomographic (cCT) images clearly revealed the dislocation of the right ureter that course around CVC and uterine body. This is the first report of feline circumcaval concurrent with circumuterine ureter detected by cCT.

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Left Retrocaval Ureter around the Ipsilateral Limb of a Double Caudal Vena Cava in a Cat

Cited by 7 publications

References 10 publications

Morphology of congenital portosystemic shunts involving the left colic vein in dogs and cats

Morphology of congenital portosystemic shunts involving the left colic vein in dogs and cats

Right circumcaval ureter and double right renal vein in the Brazilian shorthair cat (Felis catus): two case reports

Computed tomographic appearance of circumcaval and circumuterine ureter in a cat

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