title: Fetal MRI demonstrates glioependymal cyst in a case of sonographic unilateral ventriculomegaly.
abstract: We report a fetus of 28 weeks' gestation in which ultrasonography demonstrated unilateral ventriculomegaly and microcephaly. Fetal MRI demonstrated a simple, left paramedian occipital cyst with rarefaction of the corpus callosum and thinning of the adjacent cortical mantle. Ischaemia was suggested as the underlying pathogenesis, but autopsy after termination of pregnancy revealed a glioependymal cyst. This case highlights consideration of the rare diagnosis of glioependymal cyst when a cystic lesion associated with cerebral malformations, particularly dysgenesis of the corpus callosum, is demonstrated and fetal MRI suggests an ischaemic origin.
authors.affiliation: Department of Radiology, Charité-Universtitätsmedizin Berlin, Berlin, Germany. matthias.muehler@charite.de
authors.forename: Matthias R
authors.initials: MR
authors.lastname: Mühler
authors.forename: Christian
authors.initials: C
authors.lastname: Hartmann
authors.forename: Walter
authors.initials: W
authors.lastname: Werner
authors.forename: Oliver
authors.initials: O
authors.lastname: Meyer
authors.forename: Rainer
authors.initials: R
authors.lastname: Bollmann
authors.forename: Randolf
authors.initials: R
authors.lastname: Klingebiel
mesh_terms: D000328:Adult; D061085:Agenesis of Corpus Callosum; D001927:Brain Diseases / Q000175:diagnosis* / Q000000981:diagnostic imaging; D002545:Brain Ischemia / Q000175:diagnosis; D002552:Cerebral Ventricles / Q000000981:diagnostic imaging*; D003560:Cysts / Q000175:diagnosis* / Q000000981:diagnostic imaging; D004805:Ependyma / Q000000981:diagnostic imaging / Q000196:embryology*; D005260:Female; D005315:Fetal Diseases / Q000175:diagnosis* / Q000000981:diagnostic imaging; D006801:Humans; D008279:Magnetic Resonance Imaging; D009778:Occipital Lobe / Q000000981:diagnostic imaging / Q000196:embryology; D011247:Pregnancy; D011296:Prenatal Diagnosis; D016216:Ultrasonography, Prenatal