It depends: It depends on the location and the size of the lymph nodes. If they are bigger than 1.5-2 cm, or if they are continuing to increase in size, then a biopsy should done to find out the cause.. Lymph nodes are commonly swollen due to infections or inflammation. They may also be increased in size due to cancer of the lymph nodes, a condition called lymphoma.
Answered 5/27/2013
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