title: Aneurysmal bone cyst of the paranasal sinuses associated with fibrous dysplasia: CT and MR findings.
abstract: An aneurysmal bone cyst (ABC) in the paranasal sinuses is rare with only four previous cases having been described in the sphenoid and ethmoid sinuses. This report describes a case of an ABC involving the sphenoid and ethmoid sinuses as well as the upper nasal fossae. It is currently believed that a preexisting primary bone lesion, such as fibrous dysplasia, initiates an osseous arteriovenous fistula, which creates a secondary reactive lesion of bone, the ABC. These lesions, which are comprised of multiple cysts containing liquid blood and serous fluid, are optimally studied by a combination of CT and MR scans.
authors.affiliation: Department of Radiology, Mount Sinai School of Medicine, New York, NY.
authors.forename: P M
authors.initials: PM
authors.lastname: Som
authors.forename: C J
authors.initials: CJ
authors.lastname: Schatz
authors.forename: E G
authors.initials: EG
authors.lastname: Flaum
authors.forename: T H
authors.initials: TH
authors.lastname: Lanman
mesh_terms: D001845:Bone Cysts / Q000175:diagnosis* / Q000209:etiology; D005260:Female; D005357:Fibrous Dysplasia of Bone / Q000150:complications*; D006801:Humans; D008279:Magnetic Resonance Imaging; D008875:Middle Aged; D010254:Paranasal Sinus Diseases / Q000175:diagnosis* / Q000209:etiology; D014057:Tomography, X-Ray Computed