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Contributors BPF: wrote the manuscript, acquired images and obtained consent. DC: primary neurosurgeon who provided us with neurosurgical guidance on our patients. BHW: consultant who cared for first case and provided guidance with writing the article and image choice. MNC: consultant who cared for second case and conceived original idea.
Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.
Competing interests None declared.
Provenance and peer review Not commissioned; externally peer reviewed.
Patient consent for publication Parental/guardian consent obtained.
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