title: Giant cell reparative granuloma of the sphenoid: Case report and review of the literature.
abstract: BACKGROUND
  Giant cell reparative granulomas (GCRGs) are rare lesions in the cranial bones. We present a case of this rare lesion emanating from the clivus and replacing the sphenoid sinus, a highly unusual location for this entity.
  
  
  METHODS
  The case and clinical course of a 29-year-old female who presented with a large sphenoid mass are described here. The patient presented with symptoms of severe headache and diplopia; imaging demonstrated a large sphenoid mass which was completely resected via an endoscopic endonasal approach. It was based on the clivus and was shown to be a GCRG.
  
  
  CONCLUSIONS
  GCRGs are benign granulomatous lesions which should be considered in the differential in the setting of a sphenoid mass.
authors.affiliation: Department of Neurosurgery, Brigham and Women's Hospital, Harvard Medical School, Boston.
authors.forename: Osama A
authors.initials: OA
authors.lastname: Jamil
authors.forename: Mirna
authors.initials: M
authors.lastname: Lechpammer
authors.forename: Sashank
authors.initials: S
authors.lastname: Prasad
authors.forename: Zachary
authors.initials: Z
authors.lastname: Litvack
authors.forename: Ian F
authors.initials: IF
authors.lastname: Dunn