Lymph tissue in the head and neck.
   
Lymph tissue in the head and neck.

Lymph nodes play an important part in the body's defense against infection. Swelling might occur even if the infection is trivial or not apparent.


Review Date: 6/7/2012
Reviewed By: Glenn Gandelman, MD, MPH, FACC Assistant Clinical Professor of Medicine at New York Medical College, and in private practice specializing in cardiovascular disease in Greenwich, CT. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M. Health Solutions, Ebix, Inc.
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