Glioependymal and arachnoid cysts: unusual causes of early ventriculomegaly in utero.
In this report we describe two cases of fetal midline intracranial cyst presenting with ventriculomegaly at routine detailed second-trimester scan. In the first case, additional findings included a banana-shaped hypoplastic cerebellum and macrocephaly; autopsy after termination of the pregnancy revealed a glioependymal cyst. In the second case, subsequent follow-up examination revealed a progressive increase in cyst size and worsening of ventriculomegaly; termination of pregnancy was performed at 24 weeks and autopsy confirmed an arachnoid cyst. These cases document interhemispheric cyst as a cause for early ventriculomegaly in utero.
Hassan
J
J
Centre for Fetal Care, Royal Postgraduate Medical School, Queen Charlotte's and Chelsea Hospital, London, U.K.
Sepulveda
W
W
Teixeira
J
J
Cox
P M
PM
D000328:Adult; D016080:Arachnoid Cysts / Q000000981:diagnostic imaging*; D002552:Cerebral Ventricles / Q000000981:diagnostic imaging / Q000196:embryology*; D003560:Cysts / Q000000981:diagnostic imaging*; D004805:Ependyma; D005260:Female; D005315:Fetal Diseases / Q000000981:diagnostic imaging*; D005865:Gestational Age; D006801:Humans; D008297:Male; D011247:Pregnancy; D016216:Ultrasonography, Prenatal