retro aortic left renal vein

Retroaortaler
Verlauf der linken Nierenvenen in der Computertomographie. Häufige Variante.
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Teilweise
retroaortaler Verlauf der linken Nierenvenen: oberes Bild schmaler präaortaler Anteil, unteres Bild mit retroaortalem Anteil. Computertomographie axial.
Wikipedia • CC BY-SA 3.0
Anatomical
variant of a duplicated retroaortic left renal vein: Clinical manifestation, radiographic features and management. Coronal view of enhanced abdominal CT with IV contrast demonstrating superior (red arrow) and inferior (green arrow) branches of the duplicated retroaortic left renal vein.
www.eurorad.org • CC by-nc-sa-4.0
Azygos
continuation of the inferior vena cava • Azygous continuation of the inferior vena cava - Ganzer Fall bei Radiopaedia
Qureshi, P. Azygous continuation of the inferior vena cava. Case study, Radiopaedia.org. (accessed on 25 Oct 2022) https://doi.org/10.53347/rID-69127 • CC by-nc-sa 3.0 (modified)
Retroaortic
left renal vein • Traumatic renal injury - AAST grade IV injury - Ganzer Fall bei Radiopaedia
Anan, R. Traumatic renal injury - AAST grade IV injury. Case study, Radiopaedia.org. (accessed on 09 Nov 2022) https://doi.org/10.53347/rID-150231 • CC by-nc-sa 3.0 (modified)
Anatomical
variant of a duplicated retroaortic left renal vein: Clinical manifestation, radiographic features and management. Axial view of enhanced abdominal CT with IV contrast demonstrating the superior branch (red arrow) of the duplicated retroaortic left renal vein, with the renal vein visualized between the aorta and lumbar vertebrae.
www.eurorad.org • CC by-nc-sa-4.0
Anatomical
variant of a duplicated retroaortic left renal vein: Clinical manifestation, radiographic features and management. Axial view of enhanced abdominal CT with IV contrast demonstrating the inferior branch (green arrow) of the duplicated retroaortic left renal vein, with the renal vein visualized between the aorta and lumbar vertebrae.
www.eurorad.org • CC by-nc-sa-4.0
Radiopaedia • CC-by-nc-sa 3.0 • de

Retroaortic left renal vein (RLRV) is a normal anatomical variant where the left renal vein is located between the aorta and the vertebra and drains into the inferior vena cava.

Its recognition is important in order to avoid complications during retroperitoneal surgery or interventional procedures .

Epidemiology

Retroaortic left renal vein has an estimated prevalence of ~2% .

Clinical presentation

Urological symptoms can be caused by increased pressure in the renal vein resulting in venous hypertension. This is an atypical form of nutcracker syndrome. Patients can present with hematuria and recurrent left flank pain.

Types

The retroaortic position of the left renal vein has four subtypes :

  • RLRV joining the IVC in the normal position
  • RLRV joining the IVC at the level of L4–5
  • Circumaortic or collar LRV, having two limbs, one crossing anterior and one behind the aorta
  • RLRV drains into the left common iliac vein
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    Assoziationen und Differentialdiagnosen zu retroaortaler Verlauf der linken Nierenvene: