Otorhinolaryngology – Head and Neck Surgery (ORL-HNS) is the specialty which deals with functions and diseases, trauma, malformations and other disorders in childhood and in adults; of the ear, temporal bone and lateral skull base, nose, paranasal sinuses and anterior skull base, oral cavity, pharynx, larynx, trachea, oesophagus, head, neck, thyroid, salivary and lacrimal glands and adjacent structures. It also includes investigation and treatment of conditions affecting the auditory, vestibular, olfactory and gustatory senses and disorders of the cranial nerves; as well as human communication in respect of speech, language and voice disorders. Some of the conditions diagnosed by the Otorhinolaryngologists but located in adjoining areas will be treated with close cooperation with these related specialists.