The axillary lymph nodes or armpit lymph nodes (20 to 49 in number) 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.
Similarly, it is asked, what is the axilla?
The axilla (also, armpit, underarm or oxter) is the area on the human body directly under the joint where the arm connects to the shoulder.
What does axillary mean in anatomy?
medical Definition of axilla. plural axillae -(ˌ)ē, -ˌī or axillas. : the cavity beneath the junction of the arm or anterior appendage and shoulder or shoulder girdle containing the axillary artery and vein, a part of the brachial plexus of nerves, many lymph nodes, and fat and areolar tissue; especially : armpit.
What are the boundaries of the axilla?
Boundaries of axilla. The anterior wall is formed by the pectorales major and minor. The posterior wall is formed by the subscapularis above, the teres major and latissimus dorsi below. On the medial side are the first four ribs with their corresponding intercostales, and part of the serratus anterior.
What is benign axillary lymph nodes?
The axillary (underarm) lymph nodes may become enlarged or swollen any time they produce additional white blood cells to ward off an infection. These infections are often benign (non-cancerous). However, lymph nodes may also swell if they contain cancer cells.
What happens when cancer spreads to the lymph nodes?
When cancer cells break away from a tumor, they can travel to other areas of the body through either the bloodstream or the lymph system. Cancer cells can travel through the bloodstream to reach distant organs. When cancer grows inside lymph nodes, it usually affects the lymph nodes near the tumor itself.
What is the name of the lymphatic organ that filters lymph and worn out Rbcs?
It produces lymphocytes, is important for T cell maturation (T for thymus-derived). The spleen is an organ in the upper left abdomen, which filters blood, disposes of worn-out red blood cells, and provides a ‘reserve supply’ of blood. It contains both red tissue, and white lymphatic tissue.
What causes lumps under armpits?
An armpit lump usually refers to the enlargement of at least one of the lymph nodes under your arm. The lump may feel small. In other cases, it may be extremely noticeable. Armpit lumps may be caused by cysts, infection, or irritation due to shaving or antiperspirant use.
What is the function of the axillary lymph nodes?
The axillary nodes are a group of lymph nodes located in the axillary (or armpit) region of the body. They perform the vital function of filtration and conduction of lymph from the upper limbs, pectoral region, and upper back.
How many levels of axillary lymph nodes are there?
There are three surgical levels of axillary lymph nodes: level I: below the lower edge of the pectoralis minor muscle. level II: underneath/posterior the pectoralis minor muscle. level III: above/medial the pectoralis minor muscle.
What are the contents of the axilla?
The contents of the axilla include the axillary vein and artery, as well as the brachial plexus, lymph nodes and fat. The axilla is the space between the side of the thorax and the upper arm.
What do you mean by axillary lymphadenopathy?
axillary lymphadenopathy. A general term for clinically obviously enlargement of lymph nodes in the axillary region, which is a zone of lymphatic drainage from the arm and breast. Aetiology axillary lymphoadenopathy. •
What is axillary lymph node biopsy?
Sentinel node biopsy is the most common way to check the axillary lymph nodes for cancer. Before or during the procedure, a radioactive substance (called a tracer) and/or a blue dye is injected into the breast. If the node(s) do contain cancer, more lymph nodes may be removed, which is called axillary dissection.
What is a lymph node in the breast?
Lymph nodes are small clumps of immune cells that act as filters for the lymphatic system. If breast cancer spreads, the lymph nodes in the underarm (the axillary lymph nodes) are the first place it’s likely to go.
What is the normal axillary temperature?
An axillary (AK-sih-lar-e) temperature (TEM-per-ah-chur) is when your armpit (axilla) is used to check your temperature. A temperature measures body heat. A thermometer (ther-MOM-uh-ter) is used to take the temperature in your armpit. An axillary temperature is lower than one taken in your mouth, rectum, or your ear.
What is a complete axillary lymph node dissection?
A traditional axillary lymph node dissection usually removes nodes in levels I and II. For women with invasive breast cancer, this procedure accompanies a mastectomy. It may be done at the same time as, or after, a lumpectomy (through a separate incision).
What is right axillary lymphadenopathy?
The body has approximately 600 lymph nodes, but only those in the submandibular, axillary or inguinal regions may normally be palpable in healthy people.1 Lymphadenopathy refers to nodes that are abnormal in either size, consistency or number.
Where are the sentinel lymph nodes located?
The sentinel nodes are the first place that cancer is likely to spread. In breast cancer, the sentinel node is usually located in the axillary nodes, under the arm. In a small percentage of cases, the sentinel node is found somewhere else in the lymphatic system of the breast.
How many lymph nodes are in the body and where are they located?
The body has between 501 and 700 lymph nodes (the number of nodes varies from individual to individual). About half of the nodes are in the middle of your body (stomach or abdominal cavity). The lymph nodes near your armpits and groin have about 100 nodes.
Where is the first place breast cancer spreads?
When Breast Cancer Spreads. If your cancer spreads beyond your breast and the nearby lymph nodes, it’s considered advanced, or metastatic. The most common places it spreads to are the lymph nodes, liver, lungs, bones, and brain.
What are the signs that you have a cancerous lymph node?