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A member asked:
What are the common causes of swollen lymph nodes?
A doctor has provided 1 answer
Infection or cancer: Lymph nodes are like little filters for your blood. Viruses and bacteria that get in your bloodstream end up in the lymph nodes, where immune cells build up like an army. This causes swelling and pain in the lymph nodes. Cancer can also cause lymph nodes to swell, but this is usually painless. Lymphoma is a type of cancer within the lymph noes which causes them to become enlarged.
Answered 3/16/2018
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