Bilateral frontal sinus mucocele.

A male patient aged 37 years with a history of cranioencephalic trauma 21 years ago, reports a left frontal tumor beginning 4 months ago. Magnetic resonance imaging revealed a lesion suggesting mucocele (Figure 1). The patient underwent endoscopic bilateral frontal ethmoid sinusectomy. The option was made for external left frontal ethmoidectomy due to intense bone sclerosis in the frontal recess. The intersinusal septum was intact and was opened during the procedure. At 5 months follow-up there is no evidence of mucocele recurrence. DISCUSSION