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CASE REPORTS
Published online: 2018-08-31
Submitted: 2018-06-29
Accepted: 2018-08-19
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Right circumcaval ureter and double right renal vein in the Brazilian shorthair cat (Felis catus): two case reports

Marcelo Abidu-Figueiredo, Anieli Vidal Stocco, Carlos Augusto Santos-Sousa, Paulo Souza Junior, Lucas Alves Sarmento Pires, Marcio Antonio Babinski
DOI: 10.5603/FM.a2018.0082
·
Pubmed: 30178459

open access

Ahead of Print
CASE REPORTS
Published online: 2018-08-31
Submitted: 2018-06-29
Accepted: 2018-08-19

Abstract

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).

Abstract

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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Keywords

anatomical variations; circumcaval ureter; preureteral vena cava; retrocaval ureter; cat; renal vein

About this article
Title

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

Journal

Folia Morphologica

Issue

Ahead of Print

Published online

2018-08-31

DOI

10.5603/FM.a2018.0082

Pubmed

30178459

Keywords

anatomical variations
circumcaval ureter
preureteral vena cava
retrocaval ureter
cat
renal vein

Authors

Marcelo Abidu-Figueiredo
Anieli Vidal Stocco
Carlos Augusto Santos-Sousa
Paulo Souza Junior
Lucas Alves Sarmento Pires
Marcio Antonio Babinski

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