Pretracheal lymph nodes

Pretracheal Lymph Nodes

The Pretracheal lymph nodes are a group of lymph nodes located in the neck, specifically in front of the trachea. They are part of the body's lymphatic system, which plays a crucial role in the immune response and the circulation of lymph.

Diagram showing the position of the pretracheal lymph nodes (labeled as anterior) in relation to the trachea.

Anatomy

The pretracheal lymph nodes are small, bean-shaped structures that are situated anterior to the trachea. They are typically found in a vertical line along the midline of the neck, extending from the level of the thyroid gland to the root of the neck.

Function

The primary function of the pretracheal lymph nodes, like other lymph nodes, is to filter lymph. They trap and destroy harmful substances such as bacteria, viruses, and cancer cells that may be present in the lymph before it is returned to the bloodstream.

Clinical Significance

Enlargement of the pretracheal lymph nodes, known as lymphadenopathy, can be a sign of various medical conditions, including infections, autoimmune diseases, and cancers. In particular, they may be involved in the spread of thyroid cancer and lung cancer.

File:Thyroid cancer - intermed mag.jpg

Micrograph of a pretracheal lymph node affected by thyroid cancer.

See Also

• Lymph node
• Lymphatic system
• Thyroid gland
• Trachea