Delayed Presentation of Isolated Sagittal Synostosis With Raised Intracranial Pressure and Secondary Chiari Malformation With Cervical Syringomyelia

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Sagittal craniosynostosis (SC) is the most common type of premature suture fusion presenting in approximately 1 in every 5000 births with a 3:1 male:female ratio. The most common indication for surgery is the improvement of the cosmetic appearance of the skull, since a cranial deformation may have a significant psychosocial impact on affected patients. Relief from raised intracranial pressure is a further indication for surgery, although an increased intracranial pressure (ICP) can be demonstrated only in a minority of affected children at diagnosis. It is even more rare to have Chiari malformations (CMs) secondary to ICP in an isolated SC, as shown in a study by Strahle et al (Neurosurg Focus 2011;31:E2), demonstrating only 5 (3%) of the 183 with isolated sagittal synostosis having a CM. The authors present the rare case of a 4-year-old boy presenting late with raised intracranial pressure (40 mm Hg) and his management with 1 stage vault expansion and decompression of CM.

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