Supraclavicular lymph nodes are lymph nodes found above the clavicle, that can be felt in the supraclavicular fossa. The supraclavicular lymph nodes on the left side are called Virchow's nodes. It leads to an appreciable mass that can be recognized clinically, called Troisier sign.
Virchow's node is a lymph node and is a part of the lymphatic system. It is the thoracic duct end node. It receives afferent lymphatic drainage from the left head, neck, chest, abdomen, pelvis, and bilateral lower extremities, which eventually drains into the jugulo-subclavian venous junction via the thoracic duct.

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