Endoscopic surgery of the frontal sinus.

Endoscopic intranasal frontal sinusotomy represents a relatively new technique for approaching disease in the frontal sinus. As with all "new" techniques, it has not withstood the scrutiny of time. It does represent, however, a significant alternative to external obliterative procedures for the frontal sinus. The frontal sinus can be visualized with office nasal endoscopy, and the difficult evaluation of the obliterated cavity can be avoided. With an in-depth understanding of frontal sinus anatomy and the application of advanced endoscopic techniques, the frontal sinus surgeon may achieve satisfying results while producing minimal morbidity.