Mucoceles are the most common expansile, cyst-like lesion of any paranasal sinus and their sites of involvement, in order of decreasing frequency, are the frontal, ethmoid, sphenoid and maxillary sinus. Pathogenesis is still uncertain but any lesion that may cause obstruction near or at a sinus outlet is a major associated factor. Surgery is the treatment of choice and marsupialization under endoscopic control is widely used. Recently we experienced five of mucocele, which involved the frontal, frontoethmoidal, sphenoidal and maxillary sinus. One case was approached externally and the others were treated with intranasal endoscopic sinus surgery. All of them were successfully treated. So we report the cases with review of literature.