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Right circumcaval ureter and double right renal vein in the Brazilian shorthair cat (Felis catus): two case reports
Affiliations- Universidade Federal Rural do Rio de Janeiro, Brazil
- Universidade Federal do Acre, Brazil
- Universidade Federal do Pampa, Brazil
- Universidade Federal Fluminense, Brazil, Brazil
open access
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 characterised by a loop of the ureter posterior to the caudal vena cava. 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 characterised by a loop of the ureter posterior to the caudal vena cava. 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).
Keywords
anatomical variations; circumcaval ureter; preureteral vena cava; retrocaval ureter; cat; renal vein
About this articleTitle
Right circumcaval ureter and double right renal vein in the Brazilian shorthair cat (Felis catus): two case reports
Journal
Issue
Article type
Case report
Pages
433-436
Published online
2018-08-31
Page views
2238
Article views/downloads
1136
DOI
Pubmed
Bibliographic record
Folia Morphol 2019;78(2):433-436.
Keywords
anatomical variations
circumcaval ureter
preureteral vena cava
retrocaval ureter
cat
renal vein
Authors
M. Abidu-Figueiredo
A.V. Stocco
C.A. Santos-Sousa
P. Souza Junior
L.A.S. Pires
M.A. Babinski
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