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Paraaortic lymph node

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Title: Paraaortic lymph node  
Author: World Heritage Encyclopedia
Language: English
Subject: Testicular cancer, Lumbar lymph nodes, Ovary, Internal iliac lymph nodes, Lymphatic system anatomy
Collection: Lymphatics of the Torso
Publisher: World Heritage Encyclopedia

Paraaortic lymph node

Periaortic lymph node
Lymph nodes (Paraaortic labeled in center in blue.)
Left Lumbar Lymph Nodes (Paraaortic Lymph Nodes)
1. Lateral aortic
2. Preaortic
3. Postaortic
4. Intermediate Lumbar

Right Lumbar Lymph Nodes (Paracaval Lymph Nodes)
5. Lateral caval
6. Precaval
7. Postcaval
Anatomical terminology

The paraaortic lymph nodes (also known as para-aortic, periaortic, peri-aortic, and lumbar) are a group of lymph nodes that lie in front of the lumbar vertebral bodies near the aorta. These lymph nodes receive drainage from the gastrointestinal tract and the abdominal organs.


  • Divisions 1
  • Dissection 2
  • Additional images 3
  • See also 4
  • External links 5


The paraaortic lymph node group is divided into three subgroups: preaortic, retroaortic, and right and left lateral aortic.


When a paraaortic lymph node dissection or sampling is done as a part of the treatment of cancer, the lateral aortic lymph node group is the most important group. There are typically 15 to 20 lymph nodes on each side.

When dissected, the dissection usually includes the region from the bifurcation of the aorta to the superior mesenteric artery or the renal veins.

Additional images

See also

External links


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