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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
Cross-section of a lymph node with sections labelled.1) Capsule; 2) Subcapsular sinus; 3) Germinal centre; 4) Lymphoid nodule; 5) Trabeculae Lymph nodes are kidney or oval shaped and range in size from 2 mm to 25 mm on their long axis, with an average of 15 mm. [2]
The mean size of an inguinal lymph node, as measured over the short-axis, is approximately 5.4 mm (range 2.1-13.6 mm), with two standard deviations above the mean being 8.8 mm. [5] A size of up to 10 mm is generally regarded as a cut-off value for normal vs abnormal inguinal lymph node size. [6]
The parasternal lymph nodes (or sternal glands) are placed at the anterior ends of the intercostal spaces, by the side of the internal thoracic artery.. They derive afferents from the mamma; from the deeper structures of the anterior abdominal wall above the level of the umbilicus; from the upper surface of the liver through a small group of glands which lie behind the xiphoid process; and ...
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)
A posterior or subscapular group of six or seven glands is placed along the lower margin of the posterior wall of the axilla in the course of the subscapular artery.. The afferents of this group drain the skin and muscles of the lower part of the back of the neck and of the posterior thoracic wall; their efferents pass to the central group of axillary glands.
An anterior or pectoral group consists of four or five glands along the lower border of the Pectoralis minor, in relation with the lateral thoracic artery.. Their afferents drain the skin and muscles of the anterior and lateral thoracic walls, and the central and lateral parts of the mamma; their efferents pass partly to the central and partly to the subclavicular groups of axillary glands.