Pediatric Neurosurgery最新文献

{"title":"Advances in Imaging Modalities for Pediatric Brain and Spinal Cord Tumors.","authors":"Thierry A G M Huisman, Rajan Patel, Stephen Kralik, Nilesh K Desai, Avner Meoded, Karen Chen, Howard L Weiner, Daniel J Curry, Maarten Lequin, Mariette Kranendonk, Gunes Orman, George Jallo","doi":"10.1159/000531998","DOIUrl":"10.1159/000531998","url":null,"abstract":"<p><strong>Background: </strong>Neuroimaging has evolved from anatomical imaging toward a multi-modality comprehensive anatomical and functional imaging in the past decades, important functional data like perfusion-weighted imaging, permeability imaging, diffusion-weighted imaging (DWI), and diffusion tensor imaging (DTI), tractography, metabolic imaging, connectomics, event-related functional imaging, resting state functional imaging, and much more is now being offered.</p><p><strong>Summary: </strong>Precision diagnostics has proven to be essential for precision treatment. Many minimal invasive techniques have been developed, taking advantage of digital subtraction angiography and interventional neuroradiology. Furthermore, intraoperative CT and/or MRI and more recently MR-guided focused ultrasound have complemented the diagnostic and therapeutic armamentarium.</p><p><strong>Key messages: </strong>In the current manuscript, we discuss standard imaging sequences including advanced techniques like DWI, DTI, susceptibility-weighted imaging, and 1H magnetic resonance spectroscopy, various perfusion weighted imaging approaches including arterial spin labeling, dynamic contrast enhanced imaging, and dynamic susceptibility contrast imaging. Pre-, intra, and postoperative surgical imaging including visualize imaging will be discussed. The value of connectomics will be presented for its value in neuro-oncology. Minimal invasive therapeutic possibilities of interventional neuroradiology and image-guided laser ablation and MR-guided high-intensity-focused ultrasound will be presented for treatment of pediatric brain and spinal cord tumors. Finally, a comprehensive review of spinal cord tumors and matching neuropathology has been included.</p>","PeriodicalId":54631,"journal":{"name":"Pediatric Neurosurgery","volume":" ","pages":"240-258"},"PeriodicalIF":0.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10413946","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Updates in the Management of Central and Peripheral Nervous System Tumors among Patients with Neurofibromatosis Type 1 and Neurofibromatosis Type 2.","authors":"Chelsea Kotch, Stephanie Nicole Brosius, Thomas De Raedt, Michael Jay Fisher","doi":"10.1159/000529507","DOIUrl":"10.1159/000529507","url":null,"abstract":"<p><strong>Background: </strong>Neurofibromatosis type 1 and neurofibromatosis type 2 are unrelated, distinct genetic disorders characterized by the development of central and peripheral nervous system tumors.</p><p><strong>Summary: </strong>Neurofibromatosis type 1 is the most common inherited tumor predisposition syndrome with a lifelong increased risk of benign and malignant tumor development, such as glioma and nerve sheath tumors. Neurofibromatosis type 2 classically presents with bilateral vestibular schwannoma, yet it is also associated with non-vestibular schwannoma, meningioma, and ependymoma. Historically, the number of effective therapies for neurofibromatosis-related neoplasms has been limited.</p><p><strong>Key message: </strong>In the past decade, there have been significant advances in the development of precision-based therapies for NF-associated tumors with an increased emphasis on functional outcomes in addition to tumor response. Continued scientific discovery and advancement of targeted therapies for NF-associated neoplasms are necessary to continue to improve outcomes for patients with NF.</p>","PeriodicalId":54631,"journal":{"name":"Pediatric Neurosurgery","volume":" ","pages":"267-280"},"PeriodicalIF":0.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10668127","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Practical Algorithm for the Management of Multisutural Craniosynostosis with Associated Chiari Malformation and/or Hydrocephalus.","authors":"Gelsomina Aruta,&nbsp;Pietro Fiaschi,&nbsp;Marco Ceraudo,&nbsp;Gianluca Piatelli,&nbsp;Valeria Capra,&nbsp;Andrea Bianconi,&nbsp;Andrea Rossi,&nbsp;Francesca Secci,&nbsp;Marco Pavanello","doi":"10.1159/000529129","DOIUrl":"https://doi.org/10.1159/000529129","url":null,"abstract":"&lt;p&gt;&lt;strong&gt;Introduction: &lt;/strong&gt;The association between multisutural craniosynostosis with Chiari malformation (CM), venous hypertension, and hydrocephalus is widely described in the literature, especially in children with paediatric craniofacial syndromes. Some efforts have been done in the last years to understand the complex pathogenetic mechanisms underlying this association, and several theories have been proposed. In particular, it is now accepted that the hypothesis of the overcrowding of the posterior fossa due to precocious suture fusion is the cause of the cerebellar herniation in syndromic and non-syndromic patients, against the theory of intrinsic cerebellar anomalies, ventriculomegaly, and venous hypertension. However, whatever the pathophysiological mechanism, it is still unclear what the best management and treatment of CM and hydrocephalus are in multisutural craniosynostosis patients. The aim of this study was to report our 25 years' experience in treating paediatric patients affected by these rare pathologies in order to propose a simple and effective therapeutic flow chart for their management.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Materials and methods: &lt;/strong&gt;We retrospectively collected data of each patient who underwent a cranial vault remodelling (CVR) for complex multisutural craniosynostosis in our institution in the last 25 years, while monosutural craniosynostosis was excluded. We recorded data concerning type of craniosynostosis and craniofacial syndromes, presence of ventriculomegaly, and CM at presentation and clinical and radiological follow-up. Therefore, we evaluated the final outcomes (improved, stable, deteriorated) of these patients and created a practical flow chart that could help physicians choose the best surgical treatment when different pathological conditions, as Chiari malformation I (CMI) or hydrocephalus, affect complex craniosynostosis children.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Results: &lt;/strong&gt;Thirty-nine patients (39 out of 55; 70.9%), with an isolated multisutural craniosynostosis at presentation, underwent a two-step CVR as first surgery; 36 patients (92.3%) had an improved outcome, 2 patients (5.1%) had a stable outcome, and 1 patient (2.56%) had a deteriorated outcome. Other eight children (8 out of 55; 14.5%) had a radiological evidence of asymptomatic CMI at presentation. In this group, we performed CVR as first surgery. As for the final outcome, 7 patients had an improved outcome (87.5%) with good aesthetic result and stability or resolution of CMI. Finally, 7 patients (7 out of 55; 12.7%) presented a various combination of CMI and ventriculomegaly or hydrocephalus at presentation. Among them, 3 patients had an improved outcome (42.8%), and 4 patients had a deteriorated outcome (57.1%).&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Discussion: &lt;/strong&gt;The prevalence of one pathological condition with associated symptoms over the others was the key factor leading our therapeutic strategy. When craniosynostosis is associated with a radiological CM, the assessm","PeriodicalId":54631,"journal":{"name":"Pediatric Neurosurgery","volume":"58 2","pages":"67-79"},"PeriodicalIF":0.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10061157","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"White and Gray Matter Perfusion in Children with Moyamoya Angiopathy after Revascularization Surgery.","authors":"Elena Filimonova,&nbsp;Azniv Martirosyan,&nbsp;Konstantin Ovsiannikov,&nbsp;Anton Pashkov,&nbsp;Jamil Rzaev","doi":"10.1159/000531719","DOIUrl":"10.1159/000531719","url":null,"abstract":"<p><strong>Introduction: </strong>Surgical revascularization is very effective in patients with moyamoya angiopathy (MMA) and leads to improvements in cortical perfusion parameters. However, changes in white matter hemodynamics are still underestimated. To date, only a few studies have examined brain perfusion changes within deep white matter after bypass surgery in patients with MMA.</p><p><strong>Methods: </strong>Ten children with MMA were evaluated using the CT perfusion technique before and after revascularization surgery. Brain perfusion parameters within gray and white matter were compared before and after surgery. The correlations between the perfusion parameters before surgery and the Suzuki stage, as well as between the perfusion parameters and the cognitive scores, were also evaluated.</p><p><strong>Results: </strong>Brain perfusion parameters improved significantly in both gray matter (predominantly due to cerebral blood flow within the anterior circulation, p &lt; 0.01) and white matter (predominantly due to cerebral blood volume within the semiovale centrum, p &lt; 0.001). We revealed that the pattern of improvement in perfusion in white matter differed from the pattern of improvement in perfusion in gray matter. Significant correlations were revealed between the Suzuki stage before surgery and the perfusion parameters within the posterior cerebral artery circulation (adjusted p &lt; 0.05). There were also significant correlations between cognitive scores and brain perfusion parameters in gray matter and white matter (adjusted p &lt; 0.05).</p><p><strong>Conclusions: </strong>The perfusion parameters of gray matter and white matter in the brain improve differently after bypass surgery in patients with MMA. Different hemodynamics within these compartments could explain this.</p>","PeriodicalId":54631,"journal":{"name":"Pediatric Neurosurgery","volume":" ","pages":"197-205"},"PeriodicalIF":0.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10070134","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Primary Human Herpes Virus-6 Causing Recalcitrant Pyrexia after Pilocytic Astrocytoma Resection.","authors":"Julie L Chan,&nbsp;Peyton Nisson,&nbsp;Moise Danielpour,&nbsp;Jack Green","doi":"10.1159/000530114","DOIUrl":"https://doi.org/10.1159/000530114","url":null,"abstract":"<p><strong>Introduction: </strong>Human herpes virus-6 (HHV-6) is a ubiquitous virus but can lead to deleterious clinical manifestations due to its predilection for the pediatric central nervous system. Despite significant literature describing its common clinical course, it is rarely considered as a causative agent in CSF pleocytosis in the setting of craniotomy and external ventricular drainage device. Identification of a primary HHV-6 infection allowed for timely treatment with an antiviral agent along with earlier discontinuation of antibiotic regimen and expedited placement of a ventriculoperitoneal shunt.</p><p><strong>Case presentation: </strong>A two-year-old girl presented with 3 months of progressive gait disturbance and intranuclear ophthalmoplegia. Following craniotomy for removal of 4th ventricular pilocytic astrocytoma and decompression of hydrocephalus, she suffered a prolonged clinical course due to persistent fevers and worsening CSF leukocytosis despite multiple antibiotic regimens. The patient was admitted to the hospital during the COVID-19 pandemic and isolated with her parents in the intensive care unit with strict infection control measures. FilmArray Meningitis/Encephalitis (FAME) panel ultimately detected HHV-6. Clinical confirmation of HHV-6-induced meningitis was proposed given improvement in CSF leukocytosis and fever reduction following the initiation of antiviral medications. Pathologic analysis of brain tumor tissue failed to show HHV-6 genome positivity, suggesting a primary peripheral etiology of infection.</p><p><strong>Conclusion: </strong>Here, we present the first known case of HHV-6 infection detected by FAME following intracranial tumor resection. We propose a modified algorithm for persistent fever of unknown origin which may decrease symptomatic sequelae, minimize additional procedures, and shorten length of ICU stay.</p>","PeriodicalId":54631,"journal":{"name":"Pediatric Neurosurgery","volume":"58 2","pages":"89-96"},"PeriodicalIF":0.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9678167","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Carotid Artery Aneurysm and Hypomelanosis of Ito.","authors":"Zeferino Demartini,&nbsp;Bernardo Corrêa de Almeida Teixeira,&nbsp;Gelson Luis Koppe","doi":"10.1159/000530354","DOIUrl":"https://doi.org/10.1159/000530354","url":null,"abstract":"INTRODUCTION\u0000Hypomelanosis of Ito is a rare neurocutaneous syndrome characterized by hypopigmented skin lesions, abnormalities of the central nervous system, skeletal system, eyes and teeth.\u0000\u0000\u0000CASE PRESENTATION\u0000We present a case of a 4-year-old boy with hypomelanosis of Ito and neck pulsatile mass due to a giant left common carotid dissecting aneurysm.\u0000\u0000\u0000DISCUSSION\u0000To our knowledge, this is the first report of association of hypomelanosis of Ito with carotid aneurysm.\u0000\u0000\u0000CONCLUSION\u0000For children with hypomelanosis of Ito and abnormal neurologic findings, vascular neuroimaging should be considered.","PeriodicalId":54631,"journal":{"name":"Pediatric Neurosurgery","volume":"58 2","pages":"114-116"},"PeriodicalIF":0.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9684954","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Review of the Recent Changes in the WHO Classification for Pediatric Brain and Spinal Cord Tumors.","authors":"Aaron M Halfpenny, Matthew D Wood","doi":"10.1159/000528957","DOIUrl":"10.1159/000528957","url":null,"abstract":"<p><strong>Background: </strong>Periodic updates to the World Health Organization (WHO) classification system for central nervous system (CNS) tumors reflect advances in the pathological diagnosis, categorization, and molecular underpinnings of primary brain, spinal cord, and peripheral nerve tumors. The 5th edition of the WHO Classification of CNS Tumors was published in 2021. This review discusses the guiding principles of the revision, introduces the more common new diagnostic entities, and describes tumor classification and nomenclature changes that are relevant for pediatric neurological surgeons.</p><p><strong>Summary: </strong>Revisions to the WHO CNS tumor classification system introduced new diagnostic entities, restructured and renamed other entities with particular impact in the diffuse gliomas and CNS embryonal tumors, and expanded the requirements for incorporating both molecular and histological features of CNS tumors into a unified integrated diagnosis. Many of the new diagnostic entities occur at least occasionally in pediatric patients and will thus be encountered by pediatric neurosurgeons. New nomenclature impacts the terminology that is applied in communication between pathologists, surgeons, clinicians, and patients. Requirements for molecular information in tumor diagnosis are expected to refine diagnostic categories while also introducing practical considerations for intraoperative consultation, preliminary histological evaluation, and triaging of neurosurgical tissue samples for histology, molecular testing, and clinical trial requirements.</p><p><strong>Key messages: </strong>Pediatric brain tumor diagnosis and clinical management are a multidisciplinary effort that is rapidly advancing in the molecular era. Interdisciplinary collaboration is critical for providing the best care for pediatric CNS tumor patients. Pediatric neurosurgeons and their local neuropathologists and neuro-oncologists must work collaboratively to put the most current CNS tumor diagnostic guidelines into standard practice.</p>","PeriodicalId":54631,"journal":{"name":"Pediatric Neurosurgery","volume":" ","pages":"337-355"},"PeriodicalIF":0.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10664345/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10542481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Giant Supratentorial Brain Tumors in Children: Functional Outcome and Progression-Free Survival Analysis.","authors":"Amparo Saenz,&nbsp;Yamila Basilotta Marquez,&nbsp;Emma A Dalton,&nbsp;Romina Argañaraz,&nbsp;Beatriz Mantese","doi":"10.1159/000530592","DOIUrl":"https://doi.org/10.1159/000530592","url":null,"abstract":"<p><strong>Introduction: </strong>This study aimed to identify factors affecting progression-free survival (PFS) in pediatric patients with giant supratentorial brain tumors (GSBTs) treated with surgical excision. The secondary aim was to analyze how these same factors affected the functional outcome in the long term.</p><p><strong>Methods: </strong>We performed a retrospective, analytical, single-center cohort study. We included all pediatric patients with GSBT between January 2014 and June 2018. Patients were followed for a minimum of 24 months for the PFS and overall survival (OS) analysis. Functional status score (FSS) was used to assess the functional outcome.</p><p><strong>Results: </strong>We included 27 patients with GSBT, the median age was six (range 2-12), and eleven patients had a grade IV tumor. The 24-month PFS and OS were 51.85% and 74.04%, respectively. A PFS-ending event or treatment failure occurred in 13 patients. We found that patients with postoperative FFS &gt;16 have a worse PFS than patients with a postoperative FSS &lt;15 (HR 4.51; p = 0.03). Patients with more than three surgeries had worse PFS than patients with one or two procedures (HR 11.39; p = 0.004). High-grade tumors were associated with worse PFS than low-grade tumors (HR 1.55; p = 0.04). Finally, patients with CNS infections had worse PFS than patients without that complication (HR 2.70; p = 0.04).</p><p><strong>Conclusions: </strong>GSBTs in pediatric patients are complex lesions that require multidisciplinary management. Surgical management and quality of life should be considered when choosing the best treatment. Factors influencing long-term PFS were high-grade histopathology, the need for three or more surgeries, postoperative FSS &gt;16, and CNS infections.</p>","PeriodicalId":54631,"journal":{"name":"Pediatric Neurosurgery","volume":"58 3","pages":"117-127"},"PeriodicalIF":0.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10106822","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Diagnostic Accuracy of Ocular Ultrasonography in Identifying Raised Intracranial Pressure among Pediatric Population.","authors":"Vignan Kappagantu,&nbsp;Tej Prakash Sinha,&nbsp;Deepak Agrawal,&nbsp;Nayer Jamshed,&nbsp;Akshay Kumar,&nbsp;Atin Kumar,&nbsp;R M Pandey,&nbsp;Bharath Gopinath,&nbsp;Vidhya Bhushan,&nbsp;Atul Kumar Tiwari,&nbsp;Sanjeev Kumar Bhoi","doi":"10.1159/000530921","DOIUrl":"https://doi.org/10.1159/000530921","url":null,"abstract":"<p><strong>Introduction: </strong>Role of CT scan, MRI, ophthalmoscopy, direct monitoring by a transducer probe in identifying raised intracranial pressure (ICP) in emergency department is limited. There are few studies correlating elevated optic nerve sheath diameter (ONSD) measured by point of care ultrasound (POCUS) with raised ICP in pediatrics emergencies. We studied the diagnostic accuracy of ONSD, crescent sign, and optic disc elevation in identifying increased ICP in pediatrics.</p><p><strong>Methods: </strong>Prospective observational study was done between April 2018 and August 2019 after ethics approval. Out of 125 subjects, 40 patients without clinical features of raised ICP were recruited as external controls and 85 with clinical features of raised ICP as study subjects. Their demographic profile, clinical examination, and ocular ultrasound findings were noted. This was followed by CT scan. Out of 85 patients, 43 had raised ICP (cases) and 42 had normal ICP (disease controls). Diagnostic accuracy of ONSD in identifying raised ICP was evaluated using STATA.</p><p><strong>Results: </strong>The mean ONSD in case group was 5.5 ± 0.6 mm, 4.9 ± 0.5 mm in disease control group and external control group was 4.8 ± 0.3 mm. Cut-off of ONSD for raised ICP at ≥4.5 mm had a sensitivity and specificity of 97.67% and 10.98%, while ≥5.0 mm showed a sensitivity and specificity of 86.05% and 71.95%. Crescent sign and optic disc elevation had good correlation with increased ICP.</p><p><strong>Conclusion: </strong>ONSD ≥5 mm by POCUS identified raised ICP in pediatric population. Crescent sign and optic disc elevation may function as additional POCUS signs in identifying raised ICP.</p>","PeriodicalId":54631,"journal":{"name":"Pediatric Neurosurgery","volume":"58 3","pages":"142-149"},"PeriodicalIF":0.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10113659","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A New Measure of Posterior Morphology in Sagittal Craniosynostosis: The Occipital Bullet Index.","authors":"Griffin P Bins, Deborah Cull, Ryan G Layton, Samuel Kogan, Larry Zhou, Blake Dunson, Lisa R David, Christopher M Runyan","doi":"10.1159/000533168","DOIUrl":"10.1159/000533168","url":null,"abstract":"<p><strong>Introduction: </strong>Sagittal craniosynostosis (SC) is associated with scaphocephaly, an elongated narrow head shape. Assessment of regional severity in the scaphocephalic head is limited by the use of serial computed tomographic (CT) imaging or complex computer programing. Three-dimensional measurements of cranial surface morphology provide a radiation-free alternative for assessing cranial shape. This study describes the creation of an occipital bulleting index (OBI), a novel tool using surface morphology to assess the regional severity in patients with SC.</p><p><strong>Methods: </strong>Surface imaging from CT scans or 3D photographs of 360 individuals with SC and 221 normocephalic individuals were compared to identify differences in morphology. Cartesian grids were created on each individual's surface mesh using equidistant axial and sagittal planes. Area under the curve (AUC) analyses were performed to identify trends in regional morphology and create measures capturing population differences.</p><p><strong>Results: </strong>The largest differences were located in the medial regions posteriorly. Using these population trends, a measure was created to maximize AUC. The OBI has an AUC of 0.72 with a sensitivity of 74% and a specificity of 61%. When the frontal bossing index is applied in tandem, the two have a sensitivity of 94.7% and a specificity of 93.1%. Correlation between the two scores in individuals with SC was found to be negligible with an intraclass correlation coefficient of 0.018. Severity was found to be independent of age under 24 months, sex, and imaging modality.</p><p><strong>Conclusions: </strong>This index creates a tool for differentiating control head shapes from those with SC and has the potential to allow for objective evaluation of the regional severity, outcomes of different surgical techniques, and tracking shape changes in individuals over time, without the need for radiation.</p>","PeriodicalId":54631,"journal":{"name":"Pediatric Neurosurgery","volume":" ","pages":"383-391"},"PeriodicalIF":0.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10222303","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}