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Updated: Apr 21, 2026

Modeling Posthemorrhagic Hydrocephalus of Prematurity in Rats
Published on: March 28, 2025
Hydranencephaly: cerebral spinal fluid instead of cerebral mantles
Piero Pavone1, Andrea D Praticò2, Giovanna Vitaliti3
1Unit of Pediatrics and Pediatric Emergency, University Hospital "Policlinico-Vittorio Emanuele", Catania, Italy. ppavone@unict.it.
Abstract:
The authors report a wide and updated revision of hydranencephaly, including a literature review, and present the case of a patient affected by this condition, still alive at 36 months.Hydranencephaly is an isolated and with a severe prognosis abnormality, affecting the cerebral mantle. In this condition, the cerebral hemispheres are completely or almost completely absent and are replaced by a membranous sac filled with cerebrospinal fluid. Midbrain is usually not involved. Hydranencephaly is a relatively rare cerebral disorder. Differential diagnosis is mainly relevant when considering severe hydrocephalus, poroencephalic cyst and alobar holoprosencephaly. Ethical questions related to the correct criteria for the surgical treatment are also discussed.
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