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Lambdoid craniosynostosis. A 3D-computerized tomographic approach
N Leboucq1, P Montoya, Y Martinez
1Service de Neuroradiologie, CMC Gui de Chauliac, CHR Montpellier.
Insights
This study identifies 3D-CT imaging features for diagnosing lambdoid suture synostosis in children. Early detection of this rare condition is crucial for timely surgical intervention and cosmetic improvement.
Area of Science:
- Pediatric Neurosurgery
- Craniofacial Surgery
- Medical Imaging
Background:
- Parieto-occipital flattening in children can indicate underlying craniosynostosis.
- Lambdoid suture synostosis, particularly isolated forms, is relatively rare.
- Complex cranial malformations may involve multiple suture fusions.
Purpose of the Study:
- To establish 3D-CT (three-dimensional computed tomography) imaging characteristics for diagnosing lambdoid suture synostosis.
- To assess the involvement of coronal and lambdoid sutures in complex cranial malformations.
- To correlate imaging findings with clinical presentation in pediatric patients.
Main Methods:
- Retrospective analysis of 3D-CT scans from eleven children (4 months to 8 years) with parieto-occipital flattening.
- Evaluation of suture patency, specifically focusing on the lambdoid and coronal sutures.
- Correlation of imaging findings with the degree and laterality of cranial deformity.
Main Results:
- 3D-CT semeiology was developed to identify lambdoid suture synostosis.
- Unilateral lambdoid synostosis was observed in nine patients, bilateral in two.
- The study aimed to differentiate isolated lambdoid synostosis from complex malformations involving other sutures.
Conclusions:
- 3D-CT imaging provides valuable insights into diagnosing lambdoid suture synostosis.
- Isolated lambdoid synostosis, when severe or progressive, may warrant surgical correction for cosmetic reasons.
- Understanding suture involvement is key for managing complex cranial malformations.
Abstract:
From a series of eleven children aged from 4 months to eight years presenting with a parieto-occipital flattening that was unilateral in nine and bilateral in two, we attempted to determine a 3D-CT semeiology able to demonstrate the presence of a lambdoid suture synostosis, as well as the participation of coronal and lambdoid sutures in the genesis of complex cranial malformations. Pure isolated forms of lambdoid synostosis are rare and justify a surgical treatment for cosmetic purposes if the deformation is severe and progressive.