title: Sylvian fissure arachnoid cysts: a survey on their diagnostic workout and practical management.
abstract: BACKGROUND
  The management of Sylvian arachnoid cysts in children is still a matter of debate. Diagnosis is often incidental, and symptoms are frequently aspecific in symptomatic cases. Suggested diagnostic investigation results have been often unclear. Surgical treatment is also controversial, pure, and assisted endoscopic cyst marsupialization having entered in the traditional debate between craniotomic and shunting approach
  
  
  OBJECTIVE
  The objective of the present study was to survey if (and, eventually, which) agreement points do actually exist between internationally recognized pediatric neurosurgery centers in the management of children with a controversial type of Sylvian arachnoid cyst (Type II cyst).
  
  
  METHODS
  Contributors were asked to answer to a six-separate-part multiple choice questionnaire related to the case of a 2.7-year-old boy with a Type II left Sylvian arachnoid cyst presented in different clinical situations. If surgery was indicated, it was asked which surgical procedure the authors would have suggested as first option.
  
  
  CONCLUSIONS
  The option of the mere clinical observation was chosen by the majority of surgeons in case of asymptomatic clinical discovery. On the other hand, a constantly high percentage of participants suggested direct surgical treatment based on clinical manifestations or as a preventive measure justified by the risk of spontaneous or traumatic intracranial bleeding. The only diagnostic investigation result which significantly influenced the surgical indication was a localizing electroencephalography, if the child presented with seizures. The result is that in most cases the surgical indication was based on aspecific clinical manifestations and laboratory data. Craniotomy and arachnoid cyst marsupialization represented the preferred surgical option (66.6%), 28.8% of the participants suggesting pure or assisted endoscopic cyst marsupialization as primary surgical procedure. Cyst shunting was suggested by only three centers.
authors.affiliation: Pediatric Neurosurgery Unit, Institute of Neurosurgery, Catholic University Medical School, Largo "A. Gemelli", 8, 00168 Rome, Italy. gianpiero.tamburrini@rm.unicatt.it
authors.forename: Gianpiero
authors.initials: G
authors.lastname: Tamburrini
authors.forename: Mateus
authors.initials: M
authors.lastname: Dal Fabbro
authors.forename: Mateus
authors.initials: M
authors.lastname: Del Fabbro
authors.forename: Concezio
authors.initials: C
authors.lastname: Di Rocco
mesh_terms: D016080:Arachnoid Cysts / Q000175:diagnosis* / Q000628:therapy*; D002540:Cerebral Cortex / Q000473:pathology* / Q000601:surgery; D002675:Child, Preschool; D006306:Health Surveys; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D018579:Patient Selection; D017410:Practice Guidelines as Topic / Q000592:standards*; D011795:Surveys and Questionnaires