Areas Not Included in Oral Cancer

When presenting summary cancer statistics, sometimes the oral cavity and pharynx are linked together. (See Oral Cavity and Pharynx in the SEER Cancer Stat Facts).

  • The oral cavity is separate from the:
    • oropharynx, which includes the tongue base, tonsils, soft palate and the associated throat mucosa; and
    • nasopharynx, which includes the adenoid lymphoid tissue, the mucosa of the back of the nose, and the nasal side of the soft palate; and
    • hypopharynx, which includes the low, lateral and posterior walls of the throat (below where the naked eye can see when looking into a person’s open mouth).