IMMUNOLOGY

Detailed explanation-1: -Lymph allows white blood cells (lymphocytes) to circulate. When white blood cells multiply abnormally, they cause masses to form and lymph nodes become enlarged. Some lymphomas may affect the bone marrow and interfere with its making of blood cells. The result is anemia, or low red blood cell count.

Detailed explanation-2: -They also filter the lymph fluid and remove foreign material such as bacteria and cancer cells. When bacteria are recognized in the lymph fluid, the lymph nodes make more infection-fighting white blood cells. This causes the nodes to swell. The swollen nodes are sometimes felt in the neck, under the arms, and groin.

Detailed explanation-3: -Any infection or virus, including the common cold, can cause your lymph nodes to swell. Cancer can also cause lymph node inflammation. This includes blood cancer, such as leukemia and lymphoma.

Detailed explanation-4: -Lymphadenitis is the medical term for enlargement in one or more lymph nodes, usually due to infection. Lymph nodes are filled with white blood cells that help your body fight infections. When lymph nodes become infected, it’s usually because an infection started somewhere else in your body.

Detailed explanation-5: -The crowding of T cells into the lymph nodes is one of the first steps in the immune response to infection. Swollen lymph nodes are an all-too-familiar discomfort during cold and flu season. The swelling is a key event in the immune response, but what triggers it is poorly understood.

Detailed explanation-6: -Lymph nodes contain lots of white blood cells called lymphocytes. If you have an infection, the lymphocytes multiply inside your lymph nodes. They help fight the infection and make chemicals that activate other parts of your immune system. This is why your lymph nodes swell up when you have an infection.