GENERAL HISTOLOGY

Detailed explanation-1: -Swollen lymph nodes usually occur as a result of infection from bacteria or viruses. Rarely, swollen lymph nodes are caused by cancer. Your lymph nodes, also called lymph glands, play a vital role in your body’s ability to fight off infections.

Detailed explanation-2: -A normal lymph node is small and firm. When lymph nodes become infected, they usually increase in size, become tender, and may be felt in other areas of your body during a physical exam. Infections that spread to lymph nodes are usually caused by bacteria, a virus, or a fungus.

Detailed explanation-3: -Most of the time, a lymph node will reduce in size once the infection has disappeared, but sometimes it can remain swollen for some time afterwards. This is not usually a cause for concern, but if you notice that the swelling has not gone away after a few weeks, it’s a good idea to see your doctor.