Sacral lymph nodes

Sacral Lymph Nodes

File:Lymph node diagram.svg

Diagram of a lymph node structure

The Sacral Lymph Nodes are a group of lymph nodes located in the pelvis, specifically in the posterior pelvic wall near the sacrum. They are part of the lymphatic system, which plays a crucial role in the body's immune response.

Anatomy

The sacral lymph nodes are situated in the hollow of the sacrum, close to the middle and lateral sacral arteries. They receive lymph from the rectum and the pelvic viscera, and their efferent vessels pass to the internal iliac lymph nodes.

Function

The primary function of the sacral lymph nodes, like other lymph nodes, is to produce and store cells that fight infection and disease. They filter lymph fluid, trapping bacteria, viruses, and other foreign substances, which are then destroyed by special white blood cells known as lymphocytes.

Clinical Significance

The sacral lymph nodes can become enlarged or inflamed in response to infection or disease in the areas of the body they drain. This condition is known as lymphadenopathy. In addition, the spread of certain types of cancer, such as rectal cancer and prostate cancer, can involve the sacral lymph nodes.

See Also

• Lymphatic system
• Lymph node
• Internal iliac lymph nodes