18th November 2019
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.
What are lymph nodes and where are they located in the body?
Lymph nodes filter the lymphatic fluid and store special cells that can trap cancer cells or bacteria that are traveling through the body in the lymph fluid. The lymph nodes are critical for the body's immune response and are principal sites where many immune reactions are initiated.
Lymph also carries white blood cells, which are responsible for protecting the body against viruses and bacteria and may trap cancer cells. Lymph nodes are located throughout the body but the largest groupings are found in the neck, armpits, and groin areas.
Side effects of cancer surgery may include the following:
- Pain. It is common to have some pain after any surgery.
- Appetite loss.
- Swelling around the site of surgery.
- Drainage from the site of surgery.
- Bruising around the site of surgery.
It is formed when the interstitial fluid (the fluid which lies in the interstices of all body tissues) is collected through lymph capillaries. Metastatic cancer cells can also be transported via lymph. Lymph also transports fats from the digestive system (beginning in the lacteals) to the blood via chylomicrons.
Some cancers can cause swelling of the lymph nodes. Cancer may start in the lymph nodes or, more commonly, it spreads there from somewhere else. Pain or swelling in the area of the lymph nodes is a common symptom of cancer that starts in the lymphatic system, such as non-Hodgkin lymphoma and Hodgkin lymphoma.
Your lymphatic system is a network of organs, vessels and lymph nodes situated throughout your body. Many lymph nodes are located in your head and neck region. Lymph nodes that frequently swell are in this area, as well as in your armpits and groin area.
When more than one area of lymph nodes is swollen it's called generalized lymphadenopathy. Some infections (such as strep throat and chicken pox), certain medicines, immune system diseases, and cancers like lymphoma and leukemia can cause this kind of swelling.
Lymph nodes become swollen in response to illness, infection, or stress. Swollen lymph nodes are one sign that your lymphatic system is working to rid your body of the responsible agents. Swollen lymph glands in the head and neck are normally caused by illnesses such as: sinus infection.
Lymph node are usually too small to feel except in slim people when they can be felt as smooth pea-sized lumps in the groin. Another common exception is when people get a sore throat or an ear infection, which can make the neck lymph nodes enlarged, painful and tender.
If you have found a pea-sized or bean-sized node, this is normal. Normal lymph nodes are smaller than ½ inch or 12 mm. Don't look for lymph nodes, because you can always find some. They are easy to find in the neck and groin.
If your swollen lymph nodes are tender or painful, you might get some relief by doing the following:
- Apply a warm compress. Apply a warm, wet compress, such as a washcloth dipped in hot water and wrung out, to the affected area.
- Take an over-the-counter pain reliever.
- Get adequate rest.
These vessels converge to form one of two large vessels called lymphatic trunks, which are connected to veins at the base of the neck. One of these trunks, the right lymphatic duct, drains the upper right portion of the body, returning lymph to the bloodstream via the right subclavian vein.
The lymph nodes become enlarged as they produce more and more antibodies. Swollen lymph nodes behind the ear indicate a throat, ear, or eye infection, which your body is trying to fight. Injury: Any damage to the head or neck area can cause the lymph nodes behind the ear to swell as the body is trying to repair itself.
An armpit lump usually refers to the enlargement of at least one of the lymph nodes under your arm. Lymph nodes are small, oval-shaped glands that are located throughout the body. They play an important role in your body's immune system.
Signs and Symptoms of Non-Hodgkin Lymphoma
- Enlarged lymph nodes.
- Sweating and chills.
- Weight loss.
- Fatigue (extreme tiredness)
- Swollen abdomen (belly)
- Feeling full after only a small amount of food.
- Chest pain or pressure.
Lymphoma most often spreads to the liver, bone marrow, or lungs. Stage III-IV lymphomas are common, still very treatable, and often curable, depending on the NHL subtype. Stage III and stage IV are now considered a single category because they have the same treatment and prognosis.
The lymphatic system is a network of tissues and organs that help rid the body of toxins, waste and other unwanted materials. The primary function of the lymphatic system is to transport lymph, a fluid containing infection-fighting white blood cells, throughout the body.
The ones most frequently enlarged or swollen are found in the neck (a chain of lymph nodes is located in the front of the neck, the sides of the neck, and the back of the neck behind the ears), under the chin, in the armpits, and in the groin.
Autoimmune disease: This is when the immune system attacks the body's own cells. Examples include rheumatoid arthritis and celiac disease. Infection: Certain viral and bacterial infections that transform lymphocytes increase the risk, such as the Epstein-Barr virus (EBV), which causes glandular fever.
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.