OBJECTIVE To determine the efficacy of frontal sinus drillout surgery for the treatment of chronic frontal sinusitis. DESIGN Retrospective case-control study. Mean +/- SD follow-up was 4.1 +/- 1.53 years (range, 1.4-6.9 years). SETTING Academic medical center. PATIENTS One hundred consecutive patients with chronic sinusitis who underwent frontal sinus drillout surgery. Indications were fa...