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Published on: November 4, 2025
Delayed intracranial hypertension after cranial vault remodeling for nonsyndromic single-suture synostosis
Justin S Cetas1, Morad Nasseri, Targol Saedi
1Department of Neurological Surgery, Oregon Health & Science University, Portland, OR, USA.
Insights
Delayed intracranial hypertension after single-suture synostosis repair is uncommon but can occur. Reoperation for this condition was observed in 6.2% of patients, particularly males undergoing early sagittal synostosis repair.
Area of Science:
- Pediatric Neurosurgery
- Craniofacial Surgery
- Developmental Pediatrics
Background:
- Delayed intracranial hypertension (ICH) can lead to visual loss and developmental delays after cranial vault remodeling for synostosis.
- While common in syndromic cases, its incidence in single-suture nonsyndromic synostosis is not well-defined.
Purpose of the Study:
- To evaluate the frequency of reoperation for delayed intracranial hypertension (ICH) following single-suture nonsyndromic synostosis repair.
- To identify risk factors associated with the development of delayed ICH in this patient population.
Main Methods:
- Retrospective analysis of 156 patients undergoing cranial vault remodeling for nonsyndromic single-suture synostosis.
- Focus on 81 patients with at least 3 years of follow-up for delayed ICH and reoperation.
Main Results:
- Five out of 81 patients (6.2%) developed delayed ICH requiring reoperation.
- ICH was confirmed by CT findings and intracranial pressure monitoring.
- All affected patients were male, undergoing primary repair of isolated sagittal synostoses at age ≤5 months.
Conclusions:
- Delayed intracranial hypertension sporadically occurs after primary cranial vault reconstruction for single-suture nonsyndromic synostosis.
- Early sagittal synostosis repair in males under 5 months may be a risk factor for delayed ICH.
Object:
Delayed intracranial hypertension may occur after cranial vault remodeling for synostosis and may result in visual loss and developmental delay. Delayed intracranial hypertension is relatively common in children with syndromic, multisuture synostosis, but the incidence is poorly defined in children with single-suture nonsyndromic synostosis. This study evaluates the frequency of reoperation for delayed intracranial hypertension after single-suture synostosis repair.
Methods:
Patients who had undergone cranial vault remodeling for nonsyndromic single-suture synostosis and were treated at a single tertiary pediatric hospital between July 2000 and December 2010 were analyzed for the occurrence of delayed intracranial hypertension and reoperation for cranial vault remodeling.
Results:
Eighty-one patients with clinical follow-up of at least 3 years were analyzed from a total of 156 consecutive patients. The average patient age at the initial operation was 9.1 months. Five (6.2%) of 81 patients presented with delayed clinical and ophthalmological signs and symptoms of intracranial hypertension following initial cranial vault reconstruction, confirmed indirectly in each case by CT findings and directly by intracranial pressure monitoring. These 5 patients underwent repeat cranial vault reconstruction.
Conclusions:
Calvarial growth restriction and intracranial hypertension occur sporadically following primary cranial vault reconstruction for single-suture nonsyndromic cranial synostosis. In this series, delayed intracranial hypertension occurred only in male patients who underwent primary repair of isolated sagittal synostoses at an age less than or equal to 5 months.
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