title: Symptomatic perineural cyst: report of two cases treated with cyst-subarachnoid shunts.
abstract: BACKGROUND
  Symptomatic perineural cysts are rare. Resection and closure of such cysts sometimes results in postoperative neurological deficits and they can recur. We report two cases of symptomatic perineural cysts treated with subarachnoid shunts.
  
  
  METHODS
  Case 1: A 62-year-old woman presented with bladder dysfunction. We identified a cyst communicating with the subarachnoid space adjacent to the S2 nerve root and implanted a subarachnoid shunt. Seven years after this surgery, her bladder dysfunction had not recurred. Case 2: A 35-year-old woman had low back pain, radiculopathy and bladder dysfunction. We identified a cyst adjacent to the S1 nerve root and implanted a subarachnoid shunt. Her low back pain and radiculopathy improved immediately and she experienced neither postoperative neurological deficits nor recurrence.
  
  
  CONCLUSIONS
  Cyst-subarachnoid shunts are a useful treatment option for symptomatic perineural cysts.
authors.affiliation: Department of Orthopedic Surgery, Kobe University Graduate School of Medicine, 7-5-2 Kusunokicho, Chuo-ku, Kobe, 650-0017, Japan.
authors.forename: Toshiyuki
authors.initials: T
authors.lastname: Takemori
authors.forename: Kenichiro
authors.initials: K
authors.lastname: Kakutani
authors.forename: Koichiro
authors.initials: K
authors.lastname: Maeno
authors.forename: Toshihiro
authors.initials: T
authors.lastname: Akisue
authors.forename: Masahiro
authors.initials: M
authors.lastname: Kurosaka
authors.forename: Kotaro
authors.initials: K
authors.lastname: Nishida
mesh_terms: D000328:Adult; D002557:Cerebrospinal Fluid Shunts; D005260:Female; D006801:Humans; D017116:Low Back Pain / Q000209:etiology / Q000601:surgery; D008875:Middle Aged; D011843:Radiculopathy / Q000209:etiology / Q000601:surgery; D013346:Subarachnoid Space / Q000601:surgery*; D052958:Tarlov Cysts / Q000150:complications / Q000601:surgery*; D001750:Urinary Bladder, Neurogenic / Q000209:etiology / Q000601:surgery