The neck and the salivary glands
Diseases in the neck include a wide variety of pathological conditions, some of whose symptoms and signs are confined to the neck, e.g. thyroglossal cyst and carotid body tumours, to diseases that originate in the neck but present with the symptoms of dysfunction in organs outside the neck, e.g. the systemic symptoms caused by a toxic goitre, and to diseases that originate outside the neck but present with neck symptoms, e.g. cancers that spread to and enlarge the lymph glands of the neck.