The basic function of the lymphatic system of the body is immunity. Lymph nodes usually occur in groups. Some lymph nodes are close to the skin surface making them easy to notice. These lymph nodes may give early clues to infection and malignancy. We usually observe swollen lymph nodes for a period of time before removing them.
Most lymph node swelling is a reaction to ongoing infection.
Many times a virus can cause the lymph nodes to swell. This requires no treatment. For some infected lymph nodes, antibiotics may be given. Lymph nodes are removed only if they remain large and don't shrink. If you have any further questions, feel free to ask your doctor.