title: Arachnoid cyst of the fallopian canal: a surgical challenge.
abstract: OBJECTIVE
  Spontaneous cerebrospinal fluid (CSF) leaks from the fallopian canal are exceedingly rare, with only 6 reports appearing in the world literature. We report a seventh case that is unique in that it involves an arachnoid cyst of the fallopian canal and an associated facial nerve palsy.
  
  
  METHODS
  Case report.
  
  
  METHODS
  International tertiary care referral center.
  
  
  CONCLUSIONS
  CSF otorhinorrhea associated with a facial nerve palsy may be indicative of an arachnoid cyst of the fallopian canal. These fistula are extremely rare. Surgical management involves sealing the fistula while preserving facial nerve function and is extremely challenging.
authors.affiliation: Department of Otolaryngology-Head and Neck Surgery, Milton S. Hershey Medical Center, Hershey, Pennsylvania, U.S.A.
authors.forename: Jon E
authors.initials: JE
authors.lastname: Isaacson
authors.forename: Thomas E
authors.initials: TE
authors.lastname: Linder
authors.forename: Ugo
authors.initials: U
authors.lastname: Fisch
mesh_terms: D000328:Adult; D016080:Arachnoid Cysts / Q000150:complications / Q000000981:diagnostic imaging / Q000601:surgery*; D002558:Cerebrospinal Fluid Otorrhea / Q000209:etiology; D002559:Cerebrospinal Fluid Rhinorrhea / Q000209:etiology; D005158:Facial Paralysis / Q000209:etiology; D006801:Humans; D008297:Male; D013701:Temporal Bone / Q000000981:diagnostic imaging / Q000601:surgery*; D014057:Tomography, X-Ray Computed