title: Fetal arachnoid cyst of the quadrigeminal cistern in MRI and ultrasound.
abstract: METHODS
  The authors report a fetus with an arachnoid cyst of the quadrigeminal cistern without hydrocephalus at 30 gestational weeks.
  
  
  CONCLUSIONS
  We reviewed the literature and could find only 62 reported cases of arachnoid cyst of the quadrigeminal cistern. We present a case without hydrocephalus diagnosed by combining ultrasound (US) and magnetic resonance imaging (MRI). The fetus, born by normal delivery, was followed up and did not show hydrocephalus for 1 year. This combined prenatal study, which uses US and MRI, helps in dispensing proper counseling to parents and assists the gynecologist and the neurosurgeon in the pre- and postnatal management of this condition.
authors.affiliation: Department of Neurosurgery, The Jikei University School of Medicine, 3-25-8 Nishi-Shinbashi, Tokyo 105-8461, Japan. kusakayasuko@yahoo.co.jp
authors.forename: Y
authors.initials: Y
authors.lastname: Kusaka
authors.forename: W
authors.initials: W
authors.lastname: Luedemann
authors.forename: S
authors.initials: S
authors.lastname: Oi
authors.forename: R
authors.initials: R
authors.lastname: Shwardfegar
authors.forename: M
authors.initials: M
authors.lastname: Samii
mesh_terms: D016080:Arachnoid Cysts / Q000000981:diagnostic imaging* / Q000473:pathology; D005260:Female; D005315:Fetal Diseases / Q000175:diagnosis*; D006801:Humans; D008279:Magnetic Resonance Imaging; D011247:Pregnancy; D003336:Tectum Mesencephali / Q000000981:diagnostic imaging* / Q000473:pathology; D014057:Tomography, X-Ray Computed / Q000379:methods; D016216:Ultrasonography, Prenatal