title: [The outcome of children presenting with a prenatally diagnosed arachnoid cyst].
abstract: OBJECTIVE
  Evaluate the outcome of children with prenatally diagnosed arachnoid cysts.
  
  
  METHODS
  Retrospective study of seventeen cases of children who were diagnosed with an arachnoid cyst during prenatal MRI between July 1994 and January 2007 and followed up for a mean 6 years and 6 months. Follow-up was based on evaluation of clinical files and contacts with the physicians who were following the children. The children were divided into three groups: group 1 normal development, group 2: minor clinical signs, normal schooling, group 3: major clinical symptoms, schooling disturbed.
  
  
  RESULTS
  Eight of the 17 patients included in this study underwent derivation surgery for the cyst. Eight of the 17 children were in group 1, and 3 in group 2. Four of the 6 children in group 3 had associated symptoms. Two of the children in group 3 present with a supratentorial cyst, and 4 with a cyst of the posterior fossa.
  
  
  CONCLUSIONS
  The prenatal diagnosis of a arachnoid cyst should be accompanied by a search for associated lesions. The risk of hydroencephalitis should be explained to the parents.
authors.affiliation: Unité de Neurologie Pédiatrique, Hôpital des Enfants, 330 Avenue de Grande-Bretagne TSA 70034, 31059 Toulouse Cedex 9. lecamus.caroline@yahoo.com
authors.forename: C
authors.initials: C
authors.lastname: Hachon-Le Camus
authors.forename: Y
authors.initials: Y
authors.lastname: Chaix
authors.forename: M
authors.initials: M
authors.lastname: Fjortoft
authors.forename: A
authors.initials: A
authors.lastname: Sévely
mesh_terms: D016080:Arachnoid Cysts / Q000151:congenital* / Q000175:diagnosis* / Q000601:surgery; D002648:Child; D002675:Child, Preschool; D002658:Developmental Disabilities / Q000175:diagnosis; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008279:Magnetic Resonance Imaging; D008297:Male; D011183:Postoperative Complications / Q000175:diagnosis; D011247:Pregnancy; D011296:Prenatal Diagnosis