There were an estimated 61,760 incident cases of head and neck cancer (oral cavity, pharynx, oral cavity, and larynx) in the United States in 2016, accounting for about 3.7% of all new cancer cases [1]. Among oral cavity and pharynx cancer, oral cavity cancer rates are decreasing mostly due to decreases in smoking and alcohol use [2,3]. However, cancers of the base of tongue, tonsil, and oropharynx (oropharyngeal cancer) are increasing because of increases in human papillomavirus (HPV) infection.
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