Diaphragmatic lymph node

Diaphragmatic lymph nodes are a group of lymph nodes located near the diaphragm, the primary muscle involved in respiration. These nodes play a crucial role in the lymphatic system, which is part of the body's immune system.

Anatomy

The diaphragmatic lymph nodes are located along the thoracic diaphragm, which separates the thoracic cavity from the abdominal cavity. They are typically divided into two groups: the anterior diaphragmatic lymph nodes and the posterior diaphragmatic lymph nodes.

Anterior Diaphragmatic Lymph Nodes

The anterior diaphragmatic lymph nodes are located along the front (anterior) portion of the diaphragm. They receive lymph from the anterior abdominal wall and the lower parts of the pericardium and heart.

Posterior Diaphragmatic Lymph Nodes

The posterior diaphragmatic lymph nodes are located along the back (posterior) portion of the diaphragm. They receive lymph from the posterior abdominal wall and the lower parts of the esophagus and stomach.

Function

The primary function of the diaphragmatic lymph nodes is to filter lymph, a clear fluid that contains white blood cells and helps the body fight off infections and diseases. The nodes also play a role in the body's immune response, as they contain lymphocytes, a type of white blood cell that helps the body fight off infections and diseases.

Clinical Significance

Enlargement of the diaphragmatic lymph nodes, known as lymphadenopathy, can be a sign of various medical conditions, including infections, autoimmune diseases, and cancer. In particular, enlargement of these nodes can be a sign of lung cancer or abdominal cancer, as these cancers can spread to the diaphragmatic lymph nodes.

Biopsy of the diaphragmatic lymph nodes can be performed to diagnose these conditions. This procedure involves removing a small sample of tissue from the nodes for examination under a microscope.

See Also

• Lymph node
• Lymphatic system
• Diaphragm (anatomy)