Preaortic lymph node

Preaortic lymph nodes are a group of lymph nodes located in front of the aorta, the main and largest artery in the human body. They are part of the lymphatic system, which plays a crucial role in the body's immune response.

Anatomy

The preaortic lymph nodes are situated anterior to the aorta. They are typically divided into three groups: the celiac, superior mesenteric, and inferior mesenteric lymph nodes. These groups correspond to the three main branches of the abdominal aorta: the celiac artery, the superior mesenteric artery, and the inferior mesenteric artery.

Function

The primary function of the preaortic lymph nodes, like other lymph nodes in the body, is to filter lymph. Lymph is a clear fluid that circulates throughout the lymphatic system, carrying cells that help fight infections and diseases. The preaortic lymph nodes filter lymph that drains from the gastrointestinal tract and the abdominal organs.

Clinical significance

Enlargement of the preaortic lymph nodes, known as lymphadenopathy, can be a sign of various medical conditions, including infections, autoimmune diseases, and cancers. In particular, preaortic lymphadenopathy can indicate gastrointestinal or abdominal malignancies. Therefore, the detection of enlarged preaortic lymph nodes can be significant in the diagnosis and staging of these conditions.

See also

• Lymph node
• Lymphatic system
• Aorta
• Celiac artery
• Superior mesenteric artery
• Inferior mesenteric artery
• Lymphadenopathy