title: Nasoorbital Osteoma Presenting as Valsalva-Induced Orbital Emphysema.
abstract: An 18-year-old female athlete with a history of multiple traumatic concussions presented with complaints of recurrent bouts of right periorbital swelling that arose with Valsalva maneuvers such as nose-blowing or sneezing. The swelling resolved over hours to days. A CT scan of the sinuses revealed an osteoma originating from the right ethmoid roof involving the frontal recess and projecting into the orbit. She underwent excision of the osteoma via endoscopic transnasal and transcaruncular anterior orbitotomy approaches without complication.
authors.affiliation: *Department of Ophthalmology and †Department of Otolaryngology and Head & Neck Surgery, Northwestern University Feinberg School of Medicine, Chicago, Illinois, U.S.A.
authors.forename: Hans B
authors.initials: HB
authors.lastname: Heymann
authors.forename: Christopher F
authors.initials: CF
authors.lastname: Thompson
authors.forename: Gary S
authors.initials: GS
authors.lastname: Lissner
authors.forename: Robert C
authors.initials: RC
authors.lastname: Kern
mesh_terms: D000293:Adolescent; D004646:Emphysema / Q000175:diagnosis / Q000209:etiology*; D005005:Ethmoid Sinus; D005260:Female; D006801:Humans; D009916:Orbital Diseases / Q000175:diagnosis / Q000209:etiology*; D009918:Orbital Neoplasms / Q000150:complications / Q000175:diagnosis*; D010016:Osteoma / Q000150:complications / Q000175:diagnosis*; D010255:Paranasal Sinus Neoplasms / Q000150:complications / Q000175:diagnosis*; D014057:Tomography, X-Ray Computed; D014636:Valsalva Maneuver