Organ
Pre-aortic lymph nodes
Central nodes associated with the three gut arteries
High-yield
Celiac, superior mesenteric and inferior mesenteric node groups provide the central arterial map for gut lymphatic drainage.
Overview
Nodes around the celiac, superior mesenteric and inferior mesenteric origins collect lymph from regional abdominal visceral chains. This arrangement broadly parallels foregut, midgut and hindgut arterial territories. Their efferent vessels connect with the intestinal and lumbar lymphatic pathways.
Reference facts
- Location
- Anterior to the aorta near the origins of its unpaired visceral arteries.
- Parts
- Celiac nodes, superior mesenteric nodes and inferior mesenteric nodes.
- Drains from
- Collect major drainage routes from abdominal gut and associated organs, including pancreas, hepatobiliary structures and spleen; individual organs also have additional routes.
- Venous/Lymphatic drainage
- Upper visceral efferents form intestinal trunks; inferior mesenteric drainage can join superior mesenteric or lumbar chains.
- Function
- Support immune responses to material arriving from abdominal viscera, including chyle from the small intestine.
Clinical correlation
Abdominal tumors may spread through regional lymphatics and eventually involve more distant nodes, including the left supraclavicular region. An enlarged supraclavicular node is not specific to a particular abdominal primary.
Frequently asked questions
Where are the pre-aortic lymph nodes located?
Anterior to the aorta near the origins of its unpaired visceral arteries.
What do the pre-aortic lymph nodes do?
Support immune responses to material arriving from abdominal viscera, including chyle from the small intestine.
What are the parts of the pre-aortic lymph nodes?
The parts of the pre-aortic lymph nodes are the celiac nodes, superior mesenteric nodes and inferior mesenteric nodes.
How do the pre-aortic lymph nodes drain?
Upper visceral efferents form intestinal trunks; inferior mesenteric drainage can join superior mesenteric or lumbar chains.