[Current aspects of frontal sinus surgery. IV: On therapy of frontal sinus osteoma].

Osteomas are the most common benign tumors of frontal sinus. We evaluated 15 patients with osteomas of the frontal sinus who were managed between 1979 and 1992. The average duration of follow-up was 33 months. In 4 cases osteomas were removed completely via the endonasal route using a microscope and endoscope. We recommend performing a frontal sinus drainage-type 3 primarily. Indications are osteomas of the posterior wall of the frontal sinus located close to the infundibulum. For osteomas of the anterior wall and those located laterally or for very large osteomas we prefer the osteoplastic approach. Apart from the excellent exposure this latter procedure also provides good aesthetic results after carefully placed incisions and precise replacement of the bone flap. We recommend the bicoronal incision in patients with large frontal sinuses, women, or in the presence of good hair growth. Incisions are best placed in a frontal crease in patients with hair loss or a, small frontal sinus.