Anatomical variants of the retroaortic left renal vein.

Renal Veins / diagnostic imaging Retrospective Studies Tomography, X-Ray Computed / methods Angiography Lumbar Vertebrae
Abdominal aorta Anatomical variation Circumaortic/circumaortal Inferior vena cava Kidney Renal vein Retroaortic/retroaortal Retroperitoneum

Journal

Annals of anatomy = Anatomischer Anzeiger : official organ of the Anatomische Gesellschaft
ISSN: 1618-0402
Titre abrégé: Ann Anat
Pays: Germany
ID NLM: 100963897

Informations de publication

Date de publication:
Jan 2024
Historique:
received: 16 07 2023
revised: 25 09 2023
accepted: 09 10 2023
medline: 20 11 2023
pubmed: 17 10 2023
entrez: 16 10 2023
Statut: ppublish

Résumé

Anatomical variants of the left renal vein (LRV), such as the retroaortic (RLRV) and circumaortic (CLRV) course, are of surgical importance. Different morphological and topographical possibilities of the RLRV could occur. It was aimed at documenting the anatomical variables of the RLRV. A retrospective study on 375 computed tomography angiograms was performed. Five different anatomical types of LRV were documented: preaortic types 1 and 2 and retroaortic types 3-5. In 344/375 cases, preaortic LRVs were found. In 31/375 cases, different types of RLRV were found: type 3a - single RLRV, 41.94%; type 3b - single RLRV with bifid caval end, 9.68%; type 3c - single RLRV with trifid caval end, 3.23%; type 4a - CLRV with extrahilar origin, 29.03%; type 4b - CLRV with renal sinus origin, 12.9%; type 5 - triple LRV (one preaortic LRV and two RLRVs), 3.23%. Reference vertebral levels were recorded for the prevertebral segment of the RLVR. The vertebral level of type 3a varied from the L1/L2 disc to the upper third of the L4 vertebra. Type 3b was found in 3/31 RLRV cases; in one of these, the hemiazygos vein was inserted by two roots into the LRV and its upper caval end trunk. There was a significant statistical association between type 3b and the vertebral level, all cases being centered on the middle third of the L4 vertebra. New morphological possibilities of the LRV were distinguished, and a new anatomical classification system of the RLRV results. The RLRV variant should be documented case-by-case as it has its anatomical variables.

Sections du résumé

BACKGROUND BACKGROUND
Anatomical variants of the left renal vein (LRV), such as the retroaortic (RLRV) and circumaortic (CLRV) course, are of surgical importance. Different morphological and topographical possibilities of the RLRV could occur. It was aimed at documenting the anatomical variables of the RLRV.
METHOD METHODS
A retrospective study on 375 computed tomography angiograms was performed. Five different anatomical types of LRV were documented: preaortic types 1 and 2 and retroaortic types 3-5.
RESULTS RESULTS
In 344/375 cases, preaortic LRVs were found. In 31/375 cases, different types of RLRV were found: type 3a - single RLRV, 41.94%; type 3b - single RLRV with bifid caval end, 9.68%; type 3c - single RLRV with trifid caval end, 3.23%; type 4a - CLRV with extrahilar origin, 29.03%; type 4b - CLRV with renal sinus origin, 12.9%; type 5 - triple LRV (one preaortic LRV and two RLRVs), 3.23%. Reference vertebral levels were recorded for the prevertebral segment of the RLVR. The vertebral level of type 3a varied from the L1/L2 disc to the upper third of the L4 vertebra. Type 3b was found in 3/31 RLRV cases; in one of these, the hemiazygos vein was inserted by two roots into the LRV and its upper caval end trunk. There was a significant statistical association between type 3b and the vertebral level, all cases being centered on the middle third of the L4 vertebra.
CONCLUSIONS CONCLUSIONS
New morphological possibilities of the LRV were distinguished, and a new anatomical classification system of the RLRV results. The RLRV variant should be documented case-by-case as it has its anatomical variables.

Identifiants

DOI: 10.1016/j.aanat.2023.152170 PMID: 37844738
pubmed: 37844738
pii: S0940-9602(23)00125-5
doi: 10.1016/j.aanat.2023.152170
pii:
doi:

Types de publication

Journal Article

Langues

eng

Sous-ensembles de citation

IM

Pagination

152170

Informations de copyright

Copyright © 2023 Elsevier GmbH. All rights reserved.

Déclaration de conflit d'intérêts

Declaration of Competing Interest There are no conflicts of interests.

Auteurs

Nawwaf Sebastian Damen (NS)

Division of Anatomy and Embryology, Faculty of Medicine, "Victor Babeș" University of Medicine and Pharmacy, Timișoara RO-300041, Romania.

Sorin Hostiuc (S)

Division of Legal Medicine and Bioethics, Faculty of Dentistry, "Carol Davila" University of Medicine and Pharmacy, Bucharest 050474, Romania.

Adelina Maria Jianu (AM)

Division of Anatomy and Embryology, Faculty of Medicine, "Victor Babeș" University of Medicine and Pharmacy, Timișoara RO-300041, Romania.

Bogdan Adrian Manta (BA)

Division of Clinical Practical Skills, Faculty of Medicine, "Victor Babeș" University of Medicine and Pharmacy, Timișoara RO-300041, Romania.

Mugurel Constantin Rusu (MC)

Division of Anatomy, Faculty of Dentistry, "Carol Davila" University of Medicine and Pharmacy, Bucharest RO-020021, Romania. Electronic address: mugurel.rusu@umfcd.ro.

Mihai Adrian Dobra (MA)

Division of Urological Surgery - Fundeni Clinical Institute, Faculty of Medicine, "Carol Davila" University of Medicine and Pharmacy, Bucharest 050474, Romania.

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Classifications MeSH

questionsmedicales.fr › Système cardiovasculaire › Vaisseaux sanguins › Veines › Veines rénales › Anatomical variants of the retroaortic left renal vein.
questionsmedicales.fr › Environnement et santé publique › Santé publique › Méthodes épidémiologiques › Caractéristiques des études épidémiologiques › Études épidémiologiques › Études de cohortes › Études rétrospectives › Anatomical variants of the retroaortic left renal vein.
questionsmedicales.fr › Diagnostic › Techniques et procédures diagnostiques › Imagerie diagnostique › Tomographie › Tomographie à rayons X › Tomodensitométrie › Anatomical variants of the retroaortic left renal vein.
questionsmedicales.fr › Diagnostic › Techniques et procédures diagnostiques › Techniques de diagnostic cardiovasculaire › Angiographie › Anatomical variants of the retroaortic left renal vein.
questionsmedicales.fr › Appareil locomoteur › Squelette › Rachis › Vertèbres lombales › Anatomical variants of the retroaortic left renal vein.