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Virchowâs Node. Virchowâs node (or signal node) is a lymph node in the left supraclavicular fossa (the area above the left clavicle). It takes its supply from lymph vessels in the abdominal cavity. Virchowâs node is also sometimes coined âthe seat of the devilâ given its ominous association with malignant disease. The finding of an enlarged, hard node (also referred to as Troisierâs sign) has long been regarded as strongly indicative of the presence of cancer in the abdomen, specifically gastric cancer, that has spread through the lymph vessels.
In some types of cancer, doctors now do a test called a sentinel node biopsy. This can reduce the need to remove all the lymph nodes, which helps to reduce the risk of lymphoedema. The sentinel node is the first lymph node (or first few nodes) that fluid drains to from the area of the tumour.Doctors can use a dye to show up the sentinel lymph nodes and remove them. If there are no cancer cells in these nodes, you may not need to have further treatment to the other lymph nodes in the area.n some types of cancer, doctors now do a test called a sentinel node biopsy. This can reduce the need to remove all the lymph nodes, which helps to reduce the risk of lymphoedema. The sentinel node is the first lymph node (or first few nodes) that fluid drains to from the area of the tumour.