![]() Cancer, such as leukemia, Hodgkin disease, and non-Hodgkin lymphoma.Side effects of measles-mumps-rubella (MMR) vaccination.Side effects of phenytoin (Dilantin), a medicine used to prevent seizures.A bacterial illness, such as strep throat (caused by the streptococcus bacterium) or Lyme disease (a bacterial infection spread by certain types of ticks).Mononucleosis (Epstein-Barr virus), which results in fever, sore throat, and fatigue, or cytomegalovirus (CMV), a viral infection that causes symptoms similar to those of mononucleosis.A viral illness, such as measles, rubella, chickenpox (varicella), or mumps.When lymph nodes swell in two or more areas of the body, it is called generalized lymphadenopathy. Glands above the collarbone (supraclavicular lymph nodes) may swell from an infection or tumor in the areas of the lungs, breasts, neck, or abdomen.Ĭommon sites for swollen lymph nodes include the neck, groin, and underarms.In rare cases, testicular cancer, lymphoma, or melanoma may cause a lump in this area. The lymph nodes in the groin (femoral or inguinal lymph nodes) may swell from an injury or infection in the foot, leg, groin, or genitals.A rare cause of axillary swelling may be breast cancer or lymphoma. Glands in the armpit (axillary lymph nodes) may swell from an injury or infection to the arm or hand.Glands can also swell following an injury, such as a cut or bite, near the gland or when a tumor or infection occurs in the mouth, head, or neck. The glands on either side of the neck, under the jaw, or behind the ears commonly swell when you have a cold or sore throat.Which lymph nodes are swollen can help identify the problem. Lymph nodes often swell in one location when a problem such as an injury, infection, or tumor develops in or near the lymph node. ![]() Most lymph nodes in the body cannot be felt. Lymph nodes generally are not tender or painful. Groups of lymph nodes can be felt in the neck, groin, and underarms. And they may be as small as the head of a pin or as large as an olive. Lymph nodes may be found singly or in groups. The lymph nodes filter lymph fluid as it flows through them, trapping bacteria, viruses, and other foreign substances, which are then destroyed by special white blood cells called lymphocytes. The lymph system is an important part of the immune system, the body's defense system against disease. They are part of the lymph system, which carries fluid (lymph fluid), nutrients, and waste material between the body tissues and the bloodstream. In this case, they are usually painless.Lymph nodes are small, bean-shaped glands throughout the body. Lymph nodes can also become enlarged if cancer cells lodge in them. Another time when they can be felt is when you have an infection, (for example, a sore throat or an ear infection which can make the neck lymph nodes enlarged, painful and tender as these are the nearest lymph nodes to the site of infection). However, sometimes they can be felt in slim people as smooth pea-sized lumps, usually in the groin. Lymph nodes are usually too small to feel. Lymph nodes can only be felt in certain areas of the body (see Figure 1): The lymph nodes filter out harmful organisms and abnormal cells before the lymph reaches the blood stream. They are found at intervals along the lymphatic vessels like ‘beads on a string’. Lymph nodes (‘glands’) are small ‘bean-shaped’ nodules that contain millions of infection fighting lymphocyte cells. It drains into lymphatic vessels then larger lymphatic vessels called ducts in the neck before joining the blood stream near the heart (see Figure 1). Lymph fluid bathes the cells of the skin and internal organs.
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