title: Psammomatoid ossifying fibroma with secondary aneurysmal bone cyst of frontal sinus.
abstract: BACKGROUND
  Psammomatoid ossifying fibroma (POF) is a rare, slowly progressive tumor of the extragnathic craniofacial bones, with a tendency toward locally aggressive behavior.
  
  
  METHODS
  The pathognomonic histologic feature is the presence of spherical ossicles, which are similar to psammoma bodies.
  
  
  CONCLUSIONS
  Fibro-osseous lesions composed of POF and aneurysmal bone cyst (ABC) of the frontal sinus in a 12-year-old boy is reported, followed by a literature review.
  
  
  CONCLUSIONS
  To our knowledge, this is the second case of a fibro-osseous lesion composed of ossifying fibroma with reactive ABC to be reported in the literature.
authors.affiliation: Department of Neurosurgery, King Fahd University Hospital, King Faisal University, Al-Khobar 31952, Saudi Arabia. munir1nasser@yahoo.com
authors.forename: M J
authors.initials: MJ
authors.lastname: Nasser
mesh_terms: D017824:Bone Cysts, Aneurysmal / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D002648:Child; D018214:Fibroma, Ossifying / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D005626:Frontal Sinus / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D006801:Humans; D021621:Imaging, Three-Dimensional; D007150:Immunohistochemistry; D008279:Magnetic Resonance Imaging; D008297:Male; D012888:Skull Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D014057:Tomography, X-Ray Computed