What is a lymph node biopsy?
by Patricia Griffin Kellicker, BSN Definition A lymph node biopsy is the removal and examination of all, or part, of a lymph node. Lymph nodes are found throughout the body, and are part of the body’s immune system. These nodes help fight infection by producing special white blood cells called lymphocytes. They also work by trapping bacteria, viruses, and cancer cells. Normally, lymph nodes cannot be felt unless they become swollen. Infection, usually by a virus, is the most common cause of lymph node swelling. Other causes include inflammatory disease, abscess, and cancer. Parts of the Body Involved Lymph nodes may be biopsied wherever they are enlarged and can be felt.