Supraclavicular

Supraclavicular refers to structures situated above the clavicle. In anatomy and clinical medicine, the term is used to describe regions, nerves, lymph nodes, vessels, and spaces in the neck and shoulder that lie superior to the clavicle. The most commonly discussed supraclavicular elements include the supraclavicular nerves, the supraclavicular lymph nodes, and the supraclavicular fossa.

The supraclavicular nerves arise from the cervical plexus (ventral rami of C3 and C4). They emerge medial to the sternocleidomastoid and divide into medial, intermediate, and lateral branches that provide sensation to portions of the skin over the shoulder and upper chest.

Supraclavicular lymph nodes are small nodes located in the supraclavicular region near the clavicle. They are part of the deep cervical lymph node group and drain lymph from the head, neck, upper chest, and upper limbs. The left supraclavicular node, known as Virchow’s node, is classically associated with abdominal malignancies when enlarged.

Vascular structures in the supraclavicular area are supplied by branches of the subclavian artery, including branches from the thyrocervical trunk. The supraclavicular region is also a clinical landmark for procedures such as the supraclavicular approach to the brachial plexus block and central venous catheterization, procedures that carry risks such as pneumothorax due to proximity to the lung apex.

The supraclavicular fossa is a small hollow above the clavicle that is palpated during physical examination to assess the condition of lymph nodes and adjacent structures.