The most frequently seen lumps or swellings in the neck are enlarged lymph nodes. This can be caused by bacterial or viral infections, malignancy, and other rare causes.
Review Date: 1/22/2013 Reviewed By: Linda J. Vorvick, MD, Medical Director and Director of Didactic Curriculum, MEDEX Northwest Division of Physician Assistant Studies, Department of Family Medicine, UW Medicine, School of Medicine, University of Washington. Also reviewed by A.D.A.M. Health Solutions, Ebix, Inc., Editorial Team: David Zieve, MD, MHA, David R. Eltz, Stephanie Slon, and Nissi Wang.