RT Book, Section A1 Bianchi, Diana W. A1 Crombleholme, Timothy M. A1 D'Alton, Mary E. A1 Malone, Fergal D. SR Print(0) ID 1106396480 T1 Hydranencephaly T2 Fetology: Diagnosis and Management of the Fetal Patient, 2e YR 2015 FD 2015 PB McGraw-Hill Education PP New York, NY SN 978-0-07-144201-5 LK obgyn.mhmedical.com/content.aspx?aid=1106396480 RD 2024/04/16 AB Key PointsHydranencephaly is a rare condition in which the cerebral hemispheres are virtually absent.The typical case is that of an isolated finding without additional abnormalities.The diagnosis should be expected when a large cystic mass fills the cranial cavity and there is no recognizable cerebral cortex.The antenatal natural history is not well known but appears to represent an evolving intrauterine process secondary to a vascular insult.Correct diagnosis is important for the management of these cases. Vaginal delivery is optimal.The long-term outcomes associated with complete hydranencephaly are extremely poor.In most cases, there is no recurrence risk since hydranencephaly is most often associated with a destructive process rather than with a primary malformation.