Endonasal endoscopic marsupialization of paranasal sinus mucoceles.

Paranasal sinus mucoceles are relatively common in Japan, especially after prior Caldwell-Luc surgery. Recently developed endonasal endoscopic approaches were used for the drainage and marsupialization of mucoceles. We present the surgical treatment of 97 patients with mucoceles, including 68 maxillary, 13 ethmoid, nine frontal, seven sphenoid, eight frontoethmoid, and one sphenoethmoid sinuses. Six patients with maxillary mucoceles were operated via a sublabial incision. For frontal mucoceles, four patients were treated by a combined external and endonasal endoscopic approach. The other mucoceles underwent complete marsupialization under endonasal endoscopic control. There were no intraoperative or postoperative complications. No evidence of recurrence was observed in any patients during follow-up periods ranging from 36 to 84 months.