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Lymph nodes are tiny structures that help the body filter harmful and unhealthy substances, especially those that lead to infection. Cancer.org explains that each lymph node is packed with immune cells that help the body fight off infections by attacking germs carried to the nodes through lymph flui


There are hundreds of lymph nodes throughout the human body, mainly located in the head and neck region according to Mayo Clinic. However, lymph nodes are also found in the arms, legs, abdomen and groin area of the body.


According to About.com, the major functions of lymph nodes are to assist the body's immune system and to filter lymph. About.com explains that these masses of tissue and other lymphatic organs are essential in preventing the buildup of fluid in tissues, protecting the body against infections and reg


Lymph node cancer is a form of cancer that occurs in the lymph vessels that carry lymph fluid throughout the body, according to the American Cancer Society. The condition is medically known as lymphoma and starts in cells that are part of the body's immune system.


There are approximately 600 lymph nodes located throughout your body, including in your stomach, according to the Cleveland Clinic. Some lymph nodes, such as those in your neck, are located closer to your skin and can be felt with your fingers. Others are located deep inside body tissues.


Lymph nodes are found throughout the human body. They are most abundant on the sides of the neck, in the armpits, near the collarbone and near the groin.


Lymph nodes in the chest include the axillary nodes, intercostal nodes, mediastinal nodes, bronchopulmanary nodes, thymus gland, and in women, mammary nodes. Innerbody explains that they are connected to each other and rest of the lymph system by right and left lymphatic ducts, the subclavian trunk


The lymph nodes in the leg are located in the pit area behind the knee known as the popliteal fossa. These nodes are called the popliteal lymph nodes, according to the National Center for Biotechnology Information.


When the cause of lymph node enlargement is infection, it can take up to a month for nodes to go back to normal, states WebMD. Someone can also have swollen lymph glands due to other medical conditions, such as cancer, tonsillitis and mononucleosis. For this reason, if lymph glands do not shrink in


Cancerous lymph nodes may feel rubbery and clumped together in the case of lymphomas or hard and immobile in the case of metastatic cancers, according to the Merck Manual Home Edition. In both cases, the lymph nodes are swollen but painless when touched.