Paraaortic lymph node

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Lymph: Paraaortic lymph node
Lymph nodes (Paraaortic labeled in center in blue.)
Image:Illu lymph chain07.jpg
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
Gray's	subject #180 705

The paraaortic lymph nodes (also known as para-aortic, periaortic, and peri-aortic) 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 lower gastrointestinal tract and the pelvic organs.

Divisions

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

• The preaortic group drains the abdominal part of the gastrointestinal tract above the mid-rectum.
• The retroaortic group drains from the lateral and preaortic glands.
• The lateral group drains the iliac lymph nodes, the ovaries, and other pelvic organs. The lateral group nodes are located adjacent to the aorta, anterior to the spine, extending laterally to the edge of the psoas major muscles, and superiorly to the crura of the diaphragm.

Dissection

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

The parietal lymph glands of the pelvis.

See also

• Lumbar lymph nodes

External links

• http://www.instantanatomy.net/thorax/vessels/lnodes.html

v • d • e Lymphatics of torso
Chest	Right lymphatic duct - Thoracic duct (spans diaphragm) Bronchomediastinal trunk (Tracheobronchial, Parasternal) - Intercostal
Abdomen	Cisterna chyli Lumbar trunk - lumbar/paraaortic: Retroaortic - Lateral aortic - iliac: Common (External, Internal, Sacral) Intestinal trunk - preaortic: Celiac (Gastric, Hepatic, Splenic) - Superior mesenteric (Mesenteric, Ileocolic, Mesocolic) - Inferior mesenteric (Pararectal)

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Acknowledgement and Attribution Regarding Sources of Content

Some of the initial content on this page may be incorporated in part from copyleft sources in the public domain including wikis such as Wikipedia and AskDrWiki. Drug information for patients came from the The National Library of Medicine. Infectious disease information may have come from the Centers for Disease Control (CDC). Differential Diagnoses are drawn from clinicians as well as an amalgamation of 3 sources: 1.The Disease Database; 2. Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:3; 3. Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket. Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:7 .