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Brain herniation through an internal subdural membrane: a rare complication seen with chronic subdural hematomas in
Leslie Acakpo-Satchivi1, Thomas G Luerssen
1Section of Pediatric Neurosurgery, Indiana University School of Medicine, James Whitcomb Riley Hospital for Children, Indianapolis, Indiana, USA.
Insights
This case study details a rare instance of brain herniation into a chronic subdural hematoma (SDH) in an infant. Successful surgical intervention led to seizure resolution and normal development.
Area of Science:
- Pediatric Neurosurgery
- Neurology
Background:
- A 4-month-old infant presented with macrocrania and bilateral chronic subdural hematomas (SDH).
- Initial treatment involved subduroperitoneal shunt placement for the chronic SDH.
Observation:
- Eight months post-shunt placement, the patient developed new-onset seizures localized to the right frontal lobe.
- Neuroimaging revealed focal cortical herniation through a subdural membrane into the subdural space.
Findings:
- The patient underwent craniotomy for resection of the seizure focus and herniated cortex, with subsequent shunt replacement.
- Two-year follow-up showed complete seizure freedom, no medication, and normal neurological and developmental status.
Implications:
- This report describes the fourth known case of cortical herniation through a chronic subdural membrane.
- It highlights successful surgical management and favorable outcomes in such rare pediatric neurosurgical cases.
Abstract:
The authors report an unusual case of cortical herniation into a chronic subdural hematoma (SDH). The patient was successfully treated with good outcome. A 4-month-old boy with a history of macrocrania and very large bilateral chronic SDHs underwent subduroperitoneal shunt treatment shortly after presentation. Eight months later he developed a new-onset seizure disorder, which was localized by electroencephalography to the right frontal region. Neuroimaging demonstrated the development of a focal herniation of the brain through a subdural membrane into the subdural space. The patient underwent a craniotomy to resect the seizure focus and the herniated cortex. The subdural shunt was subsequently replaced. After 2 years of follow-up, the patient remains free of seizures, is on no medication regimen, and is neurologically and developmentally normal. To the authors' knowledge, this is only the fourth report in the medical literature of cortical herniation through a chronic subdural membrane and the first in which successful treatment with a good outcome is described.
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