Where are axillary lymph nodes located?
underarm
The body has about 20 to 40 bean-shaped axillary lymph nodes located in the underarm area. These lymph nodes are responsible for draining lymph – a clear or white fluid made up of white blood cells – from the breasts and surrounding areas, including the neck, the upper arms, and the underarm area.
How many levels of axillary lymph nodes are there?
Anatomically, axillary lymph nodes are divided into three levels, with the pectoralis minor muscle as the boundary.
What are the major axillary lymph nodes?
There are five axillary lymph node groups, namely the lateral (humeral), anterior (pectoral), posterior (subscapular), central and apical nodes. The apical nodes are the final common pathway for all of the axillary lymph nodes.
How big should level 2 lymph nodes be?
For Level II, the upper limit exceeds 10 mm (11.28 mm), with adult guidelines indicating a normal range up to 15 mm. Of all the measured lymph nodes, 11 nodes had a short axial axis higher than 10 mm (1.5% of the measured lymph nodes in 10 children). Those lymph nodes were found in Levels I, II, III and V.
What is axillary lymph node metastasis?
Axillary lymph node metastasis (ALNM) is commonly the earliest detectable clinical manifestation of breast cancer when distant metastasis emerges. This study aimed to explore the influencing factors of ALNM and develop models that can predict its occurrence preoperatively.
Where do the Level III axillary lymph nodes lie?
The lymph nodes located medially to the pectoralis minor muscle are level III axillary lymph nodes.
Where is 2a lymph node?
Upper Jugular Group
Levels IIA & IIB: Upper Jugular Group Lymph nodes located around the upper third of the internal jugular vein and adjacent spinal accessory nerve extending from the level of the skull base (above) to the level of the inferior border of the hyoid bone (below).