Abstract
We report a case of mucocele of the frontal sinus treated with reconstruction of the skull base. The patient showed swelling of the left side of the medial ocular angle and was diagnosed as mucocele of the frontal sinus. At first, endoscopic sinus surgery was carried out and the mucocele was unfolded into the nasal ' cavity. However, acute frontal sinusitis with MRSA emerged and this inflammation spread to dura mater. Debridement of the frontal sinus granulation and reconstruction of the anterior skull base by a galeo-pericranial flap were performed with craniotomy. It is an effective method to shield the cranial cavity from the nasal cavity by utilizing a galeo-pericranial flap to prevent infection from the frontal sinus from spreading to the cranial cavity.
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