title: Giant osteoid osteoma of the ethmoid bone with unusual large nidus.
abstract: Osteoid osteoma (OO) is a benign bone neoplasm which is seen in the long bones of appendicular skeleton. It is rarely seen in the cranium. Ethmoid bone OO has been very rarely reported so far. We report another case of giant osteoid osteoma involving the ethmoid bone with intraorbital and intracranial extension in a 3O year old female patient. This case with unusual anatomical location was presented. It is first time reporting a giant osteoid osteoma of ethmoid bone with such a large nidus.
authors.affiliation: Department of Neurosurgery, Clinic of Neurosurgery, ŞişliEtfal Education and Research Hospital, Istanbul, Turkey.
authors.forename: Ahmet Murat
authors.initials: AM
authors.lastname: Müslüman
authors.forename: Ersin
authors.initials: E
authors.lastname: Oba
authors.forename: Adem
authors.initials: A
authors.lastname: Yılmaz
authors.forename: Fevziye
authors.initials: F
authors.lastname: Kabukcuoglu
authors.forename: Ender
authors.initials: E
authors.lastname: Uysal