title: Sudden hemianopsia secondary to ethmoid sinus mucocele.
abstract: Paranasal sinus mucoceles are benign cystic lesions, filled with mucus, occurring due to an obstruction of involved sinus ostium. They are indolent, locally expansive, and destructive. Surgical treatment must be performed and, when done at the correct time, may prevent sequelae. We present a case of ethmoid sinus mucocele with orbit involvement and permanent optical nerve injury.
authors.affiliation: Department of Otorhinolaryngology, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil.
authors.forename: Ligia
authors.initials: L
authors.lastname: Morganti
authors.affiliation: Department of Otorhinolaryngology, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil.
authors.forename: Leandro
authors.initials: L
authors.lastname: Evangelista
authors.affiliation: Department of Otorhinolaryngology, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil.
authors.forename: Roberto
authors.initials: R
authors.lastname: Guimaraes
authors.affiliation: Department of Otorhinolaryngology, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil.
authors.forename: Paulo
authors.initials: P
authors.lastname: Crosara
keywords: ethmoid sinus; hemianopsia; sinus mucocele