Abstract

Objective: Frontal sinusitis is a rare but potentially serious infection that can lead to intracranial complications. In this study, we present a case of brain abscess secondary to frontal sinusitis with a posterior table defect, treated with a combined surgical approach.

Case: A 59-year-old male patient presented with seizures and loss of consciousness one month after being diagnosed with acute sinusitis and preseptal cellulitis. Computed tomography revealed a brain abscess in the frontal lobe. Following surgical drainage, an 11 mm defect was identified in the posterior table of the frontal sinus, for which additional surgery was planned. Endoscopic sinus surgery was performed to remove pathological tissue, followed by an external osteoplastic approach with fibrin glue and hemostatic agents to repair the defect, and an otologic T-tube was placed in the frontal sinus ostium.

Conclusion: Intracranial complications of frontal sinusitis can be successfully managed with a multidisciplinary approach and appropriate surgical techniques. In complicated frontal sinusitis, early diagnosis, treatment timing, surgical planning, and maintaining frontal sinus drainage are of great importance.

Key words: Frontal sinusitis, brain abscess, posterior table defect, endoscopic sinus surgery, T-tube