Cancers of the head and neck are a heterogeneous group,
consisting of cancers of the mouth (base of tongue, other tongue,
gum, floor of mouth, palate and other mouth; ICD 10 codes C01–
C06); salivary glands (C07–C08); pharynx (tonsil, oropharynx,
nasopharynx, pyriform fossa, hypopharynx, other mouth/pharynx;
C09 C14), nasal cavity, middle ear and sinuses (C30–C31) and
larynx (C32). Cancer of the lip is not included in “head and neck
cancer” in this report.