Head and neck conditions refer mainly to tumours that affect the head and neck areas. These areas include the nose and sinuses, the nasopharynx (area behind the nose just above the throat), the oral cavity (mouth), the thyroid glands (below the voice box), the oropharynx (throat), the larynx (voice box), the hypopharynx (inlet into the throat) and the salivary gland. These tumours can be benign (non-cancerous) or malignant (cancerous). Anyone with neck lumps should see a doctor.