title: Arachnoid pit and extensive sinus pnematization as the cause of spontaneous lateral intrasphenoidal encephalocele.
abstract: Lateral sphenoid encephalocele, especially within the lateral aspect of the sphenoid sinus, when the sphenoid sinus has pneumatized extensively into the pterygoid recess, are considered exceedingly rare. We report a rare case of lateral intrasphenoidal encephalocele with spontaneous cerebral spinal fluid (CSF) rhinorrhea. Computed tomography demonstrated bilateral arachnoid pit, extensive sphenoid sinus pneumatization, and a defect in the superior wall of the left lateral recess of the sphenoid sinus. Magnetic resonance imaging demonstrated anteromedial temporal lobe herniating through the bony defect.
authors.affiliation: Department of Radiology, King Saud Medical City, Riyadh, Kingdom of Saudi Arabia.
authors.forename: Ali
authors.initials: A
authors.lastname: Almontasheri
authors.forename: Bandar
authors.initials: B
authors.lastname: Al-Qahtani
authors.forename: Nader
authors.initials: N
authors.lastname: Aldajani