• Oropharynx. This is the upper part of the throat that can
  be seen when you say "ahhh." It also includes the tonsils.
• Nasopharynx . The nasopharynx is behind the nose
  and above the oropharynx. It cannot be seen directly, but
  is viewed with a mirror or a scope.
• Hypopharynx. This is the lower part of the throat
  (pharynx) where food goes just before we swallow it.
• Larynx. The larynx (voice box) is in the front of the
  neck in the region of the Adam's apple.
• Metastatic squamous cell cancer to cervical (neck) lymph
  nodes . If a cancer that is discovered in lymph nodes in the
  upper part of the neck is squamous cell (or epidermoid), it
  is usually a metastasis from a head and neck cancer.
  Unless some other primary source can be found (such as
  lung cancer), this tumor is generally treated as a head and
  neck cancer. It is important to know that this type
  of metastatic