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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 lymph vessels from thin walls of the chest and the abdomen above the level of the navel, and the vessels from the upper limb.
Deltoideopectoral nodes: Situated between the pectoralis major and deltoid muscles inferior to the clavicle. Deep lymph nodes of the arm: These comprise the axillary nodes, which are 20-30 individual nodes and can be subdivided into: Lateral nodes; Anterior or pectoral nodes; Posterior or subscapular nodes; Central or intermediate nodes
Axillary lymph nodes may be normal up to 30 mm if consisting largely of fat. [36] In children, a short axis of 8 mm can be used. [37] However, inguinal lymph nodes of up to 15 mm and cervical lymph nodes of up to 20 mm are generally normal in children up to age 8–12. [38]
The substance of a lymph node is divided into the outer cortex and the inner medulla. [4] The cortex of a lymph node is the outer portion of the node, underneath the capsule and the subcapsular sinus. [17] It has an outer part and a deeper part known as the paracortex. [17]
Axillary lymphadenopathy is distinguished by an increase in volume or changes in the morphology of the axillary lymph nodes. It can be detected through palpation during a physical examination or through changes in imaging tests. On a mammogram (MMG), normal lymph nodes typically appear oval or reniform with a radiolucent center representing ...
This image is a derivative work of the following images: File:Lymph_node_regions.jpg licensed with PD-USGov 2008-04-08T13:11:40Z Tdvorak 310x469 (52685 Bytes) {{Information |Description=Ann Arbor Hodgkin's Lymphoma; Lymph Node Regions |Source=seer.cancer.gov |Date=April 8, 2008 |Author= |Permission= |other_versions= }} Uploaded with derivativeFX
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)
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