[Experience with laser surgery pain therapy in advanced oropharyngeal tumors].

The noticeable analgesic side effect by laser surgery of advanced oropharynx tumours is not based on simple heat conduction in the coagulation zone and its vicinity as originally supposed, but becomes a long-term effect only via directed, localised and penetrating destruction. Repeated ultrashort laser impulses of high intensity are imperative. The experience in 21 patients is reported.