A case of pyocele of the ethmoid sinus

Mucocele is a cystic swelling of the frontal sinus, ethmoid sinus or fronto-ethmoid sinus which retains seromucoid secretion within an initially epithelium-lined space, and an infected mucocele is termed pyocele. They occur in relation to the blockage of the natural sinus ostium. We experienced 1 case of ethmoid pyocele. The case was treated with Caldwell-Luc’s operation and intranasal ethmoidectomy，we obtained good result. Thus, we present this case with a brief review of the literature.