55 y/o F presents for diagnostic MRI to determine extent of disease. What is indicated by the arrow?
LEVEL III (APICAL) LYMPHADENOPATHY
Group of lymph nodes that are the final step in lymph drainage through the axilla
Receive lymph from level II nodes and drain into the subclavian lymphatic trunk and supraclavicular nodes, a path that ultimately leads to the thoracic duct on the left side of the thorax and the right lymphatic duct on the right side
Metastasis to this level automatically indicates N3 nodal staging (stage IIIC disease)