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Cerebellar contusion associated with type I Chiari malformation following supratentorial head trauma: case report

W T Couldwell1, W Zhang, R Allen

  • 1Department of Surgery, University of North Dakota, Grand Forks, USA.

Neurological Research
|February 21, 1998
PubMed

Insights

Acute Type I Chiari malformation is rare in children. Trauma in an 11-year-old boy revealed this condition, leading to brainstem dysfunction and eventual improvement after fracture repair.

Area of Science:

  • Pediatric Neurosurgery
  • Neurology
  • Trauma Surgery

Background:

  • Acute presentation of Type I Chiari malformation in pediatric patients is uncommon.
  • Type I Chiari malformation involves cerebellar tonsillar ectopia at the craniovertebral junction.

Observation:

  • An 11-year-old male sustained a severe head injury with an open depressed skull fracture.
  • Radiographic imaging revealed cerebellar contusion, subarachnoid hemorrhage, and an underlying Type I Chiari malformation.
  • Initial somatosensory evoked potentials showed impaired lower brainstem conduction.

Findings:

  • Surgical debridement and elevation of the skull fracture were performed.
  • Neurological function showed gradual improvement post-operatively.
  • Follow-up somatosensory evoked potentials indicated recovery of craniovertebral junction conduction.

Implications:

  • This case highlights that Type I Chiari malformation can present acutely following head trauma in children.
  • Tonsillar ectopia may increase susceptibility to cerebellar, brainstem, and spinal cord injury after supratentorial trauma.
  • Early diagnosis and management are crucial for improving outcomes in pediatric patients with Chiari malformation and head injuries.

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