Sentinel lymph node
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Lymph nodes are small organs that play a critical role in the human immune system. Located throughout the body, they filter bodily fluids for harmful substances.
Image illustrating sentinel lymph nodes. The axillary lymph nodes drain 75% of the lymph from the breasts((uncited)) and so may be the first lymph nodes affected in breast cancer.
A blue stained (with isosulfan blue) sentinel lymph node in the axilla
A micrograph showing an adenocarcinoma of the breast (dark pink) in a lymph node (purple) and extending into the surrounding fat (white, chicken-wire appearance). H&E stain.
Axillary lymph nodes
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The axillary lymph nodes or armpit lymph nodes are lymph nodes in the human armpit. Between 20 and 49 in number, they drain lymph vessels from the lateral quadrants of the breast, the superficial lymp
Axillary lymphatic plexus Cubital lymph nodes (not part of the lymph node drainage of the breast) Superficial axillary (low axillary) Deep axillary lymph nodes Brachial axillary lymph nodes Interpectoral axillary lymph nodes (Rotter nodes) Paramammary or intramammary lymph nodes Parasternal lymph nodes (internal mammary nodes)