title: Frontoethmoidal osteoma with orbital extension. A case report.
abstract: METHODS
  A case is presented of a right frontoethmoidal osteoma with intraorbital invasion in a 43-year-old male, who was seen in the clinic with a proptosis, retro-orbital pain, peri-palpebral inflammation, and binocular diplopia due to muscular route limitation. Open surgery was performed using a subcranial approach, with removal of several fragments of osteoma. Histological analysis confirmed the diagnosis.
  
  
  CONCLUSIONS
  Osteomas are benign bone-forming tumours with slow growth. They are usually asymptomatic until mass effect complications occur in the brain or in the orbit, or locally, generating mucoceles due to sinus drainage obstruction.
authors.affiliation: Departamento de Oftalmología, Hospital General Universitario Gregorio Marañón, Madrid, España. Electronic address: ire_blanco@hotmail.com.
authors.forename: I
authors.initials: I
authors.lastname: Blanco Domínguez
authors.affiliation: Departamento de Oftalmología, Hospital General Universitario Gregorio Marañón, Madrid, España.
authors.forename: A V
authors.initials: AV
authors.lastname: Oteiza Álvarez
authors.affiliation: Departamento de Oftalmología, Hospital General Universitario Gregorio Marañón, Madrid, España.
authors.forename: L M
authors.initials: LM
authors.lastname: Martínez González
authors.affiliation: Departamento de Oftalmología, Hospital General Universitario Gregorio Marañón, Madrid, España.
authors.forename: B
authors.initials: B
authors.lastname: Moreno García-Rubio
authors.affiliation: Departamento de Oftalmología, Hospital General Universitario Gregorio Marañón, Madrid, España.
authors.forename: G
authors.initials: G
authors.lastname: Franco Iglesias
authors.affiliation: Departamento de Oftalmología, Hospital General Universitario Gregorio Marañón, Madrid, España.
authors.forename: J
authors.initials: J
authors.lastname: Riba García
mesh_terms: D000328:Adult; D004172:Diplopia / Q000209:etiology; D005005:Ethmoid Sinus / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D005094:Exophthalmos / Q000209:etiology; D005626:Frontal Sinus / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D006801:Humans; D021621:Imaging, Three-Dimensional; D008297:Male; D009361:Neoplasm Invasiveness; D009915:Orbit / Q000000981:diagnostic imaging / Q000473:pathology*; D010016:Osteoma / Q000150:complications / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D010255:Paranasal Sinus Neoplasms / Q000150:complications / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D011183:Postoperative Complications / Q000209:etiology; D014057:Tomography, X-Ray Computed; D014103:Torticollis / Q000209:etiology
keywords: Abordaje subcraneal; Binocular diplopia; Botulinum toxin; Diplopía binocular; Osteoma; Proptosis; Subcranial approach; Toxina botulínica