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Secondary pediatric encephalocele after ventriculosubgaleal shunting for posthemorrhagic hydrocephalus
Daniel Seeburg1, Edward Ahn2, Thierry Huisman1
1Division of Pediatric Neuroradiology, Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States.
Insights
Two premature infants developed secondary encephaloceles after ventriculosubgaleal shunting for posthemorrhagic hydrocephalus. This rare complication requires awareness among healthcare providers caring for high-risk neonates.
Area of Science:
- Neonatal Neurology
- Pediatric Neurosurgery
- Medical Imaging
Background:
- Intraventricular hemorrhage (IVH) and posthemorrhagic hydrocephalus (PHH) are frequent complications in very low-birth-weight premature infants.
- Ventricular shunting is often necessary for cerebrospinal fluid (CSF) diversion in these neonates.
- Advances in neonatal intensive care increase survival rates for premature infants with complex medical conditions.
Observation:
- This report details two cases of PHH in premature infants treated with ventriculosubgaleal shunting.
- Both infants subsequently developed a secondary encephalocele at the shunt site.
- Encephaloceles represent a rare but significant complication following this neurosurgical procedure.
Findings:
- Secondary encephaloceles can arise after ventriculosubgaleal shunting for PHH.
- Encephaloceles pose risks including seizure activity, meningitis, abscess formation, and brain parenchyma infarction.
- Radiologists and clinicians must recognize this potential complication in neonates.
Implications:
- Increased awareness of secondary encephalocele formation is crucial for neonatologists and neurosurgeons.
- Prompt recognition and management of encephaloceles can mitigate severe neurological sequelae.
- This finding highlights the need for careful monitoring of infants undergoing CSF shunting procedures.
Abstract:
Intraventricular hemorrhage and posthemorrhagic hydrocephalus continue to be common complications in very low-birth-weight premature infants, often requiring ventricular shunting for cerebrospinal fluid diversion. We report on two infants with posthemorrhagic hydrocephalus that developed a secondary encephalocele after ventriculosubgaleal shunting. Encephaloceles can act as a source of seizure activity and can result in various additional complications including meningitis, abscess formation, and infarction of herniated brain parenchyma. With continued improvements in neonatal intensive care, the survival of infants with significant medical comorbidities-including those that develop posthemorrhagic hydrocephalus requiring ventricular shunting-continues to increase. It is thus important for the radiologist and treating physician to be aware of this rare, potential complication.
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