TY - CHAP M1 - Book, Section TI - Hydranencephaly A1 - Bianchi, Diana W. A1 - Crombleholme, Timothy M. A1 - D'Alton, Mary E. A1 - Malone, Fergal D. PY - 2015 T2 - Fetology: Diagnosis and Management of the Fetal Patient, 2e 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. SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/03/29 UR - obgyn.mhmedical.com/content.aspx?aid=1106396480 ER -