title: Epineurial pseudocysts of the intratemporal facial nerve.
abstract: OBJECTIVE
  Facial nerve pseudocysts are infrequently encountered during temporal bone surgery or neurotologic evaluation. This report describes the senior author's experience with epineurial pseudocysts of the intratemporal facial nerve.
  
  
  METHODS
  Retrospective case review.
  
  
  METHODS
  Academic, tertiary referral center.
  
  
  RESULTS
  Epineurial pseudocysts were identified on computed tomography in the mastoid segment in seven patients during evaluation for profound sensorineural hearing loss or facial nerve symptoms. Histopathologic examination revealed fibroadipose tissue without nerve tissue in five cases that underwent excision.
  
  
  CONCLUSIONS
  Facial nerve epineurial pseudocysts are uncommon, benign lesions of the mastoid segment. Surgical excision may be safely performed for facial motor symptoms or for cochlear implant placement.
authors.affiliation: Departments of Otolaryngology, University of Florida, Gainesville, Florida 32610-0264, USA.
authors.forename: Sarah L
authors.initials: SL
authors.lastname: Pertzborn
authors.forename: John D
authors.initials: JD
authors.lastname: Reith
authors.forename: Anthony A
authors.initials: AA
authors.lastname: Mancuso
authors.forename: Patrick J
authors.initials: PJ
authors.lastname: Antonelli
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D003560:Cysts / Q000000981:diagnostic imaging* / Q000473:pathology*; D003937:Diagnosis, Differential; D005155:Facial Nerve Diseases / Q000000981:diagnostic imaging* / Q000473:pathology* / Q000601:surgery; D005260:Female; D005500:Follow-Up Studies; D006319:Hearing Loss, Sensorineural / Q000175:diagnosis; D006801:Humans; D007223:Infant; D008279:Magnetic Resonance Imaging; D008297:Male; D012189:Retrospective Studies; D012720:Severity of Illness Index; D013514:Surgical Procedures, Operative / Q000379:methods; D013701:Temporal Bone / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed