Neurosurgical Management of Occipital Encephaloceles

Occipital encephaloceles are congenital defects in which brain tissue, meninges and cerebrospinal fluid herniate through a gap in the occipital bone. Presentation ranges from small, skin-covered sacs to giant protrusions containing cerebellar or occipital lobe tissue. Accurate preoperative imaging with MRI and CT is essential to delineate the contents of the sac, assess associated vascular anomalies and plan skull reconstruction. Surgical management is typically undertaken in the neonatal period to prevent rupture, infection and progressive neurological compromise. Key elements include careful patient positioning to avoid tension on the sac, meticulous dissection to preserve viable neural tissue and vascular structures, watertight dural closure and reconstruction of the calvarial defect with autologous bone graft or synthetic substitutes. In cases complicated by hydrocephalus, cerebrospinal fluid diversion via ventriculoperitoneal shunting may be performed either simultaneously or in a staged manner. A multidisciplinary team involving neurosurgeons, anaesthetists, neonatologists and craniofacial surgeons is critical for optimising outcomes. Long-term follow-up addresses developmental milestones, seizure control and cosmesis of the surgical repair. Prognosis is influenced by the volume of herniated neural tissue, presence of hydrocephalus, associated central nervous system malformations and perioperative complications.

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Neurosurgical Management of Occipital Encephaloceles publication trend

The graph below shows the total number of articles in neurosurgical management of occipital encephaloceles across all publications each year (not limited to Nature Index journals).

Technical terms

Occipital encephalocele: A neural tube defect in which intracranial contents herniate through a bony defect in the occipital skull region.

Hydrocephalus: Excess accumulation of cerebrospinal fluid in the brain’s ventricular system, leading to raised intracranial pressure.

Ventriculoperitoneal shunt: A surgical device that diverts cerebrospinal fluid from the ventricles to the peritoneal cavity to relieve hydrocephalus.

Dura mater: The tough, outermost membrane covering the brain and spinal cord, requiring secure closure during neurosurgical repair.

Neural tube defect: A developmental anomaly arising from incomplete closure of the neural tube during early embryogenesis, resulting in conditions such as encephalocele.

References

1. Encephalocele: know it to deal with it. Egyptian Journal of Radiology and Nuclear Medicine (2021).
2. Hydrocephalus associated with occipital encephalocele: surgical management and clinical outcome. Egyptian Journal of Neurosurgery (2021).
3. Occipital Meningoencephalocele case report and review of current literature. Chinese Neurosurgical Journal (2017).
4. Giant occipital encephalocele: a case report, surgical and anesthetic challenge and review of literature. Egyptian Journal of Neurosurgery (2021).
5. Wound Dehiscence After Occipital Encephalocele Surgical Repair in a Neonate: Management Alternative. Cureus (2022).
6. Risk and prognostic factors in patients with congenital encephalocele. Egyptian Journal of Neurosurgery (2023).