Abstract
A clinical case in patient with a recurrent frontal sinus mucocele is described. An extended endoscopic frontotomy of the Draf IIb type was performed; a mucoperiosteal flap was used to prevent postoperative stenosis of the neo-ostium. However, within a year after the intervention, ostium stenosis developed with recurrence of the mucocele due to severe hyperostosis, which required repeated surgical treatment. The method of choice was an extended frontotomy of the Draf III type using a combination of pedicled flap and free mucosal graft to reduce the risk of restenosis of the frontal sinus ostium.
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