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chiari malformation

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https://www.readbyqxmd.com/read/28914877/-expansive-suboccipital-cranioplasty-in-chiari-1-malformation-a-case-report-and-technical-notes
#1
A E Korshunov, Yu V Kushel'
In this case report, we describe the use of expansive suboccipital cranioplasty in Chiari-1 malformation. The technique improves the efficacy and safety of treatment for Chiari-1 malformation. The technique can be used as an adjunct treatment together with any variant of posterior fossa decompression, including duroplasty and extradural decompression.
2017: Zhurnal Voprosy Neĭrokhirurgii Imeni N. N. Burdenko
https://www.readbyqxmd.com/read/28899831/acquired-chiari-i-malformation-with-syringomyelia-secondary-to-colloid-cyst-with-hydrocephalus-case-report-and-review-of-literature
#2
Amit Kumar Thotakura, Nageswara R Marabathina
INTRODUCTION: Acquired Chiari malformation and associated syringomyelia have been previously described following lumbar puncture/drainage, lumboperitoneal shunts, and spontaneous CSF leakage. In addition to these etiologies, space-occupying lesions such as meningiomas, epidermoid cysts, medulloblastomas, and arachnoid cysts are rare causes of acquired Chiari malformation and syringomyelia. We report a rare case of colloid cyst with hydrocephalus causing secondary Chiari malformation with syringomyelia...
September 9, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28894924/cyclical-vomiting-syndrome-secondary-to-a-chiari-i-malformation-a-case-report
#3
William L White, Veejay Bagga, David I Campbell, Anthony R Hart, Shungu Ushewokunze
BACKGROUND: Cyclical vomiting syndrome is a disorder characterised by recurrent episodes of profuse vomiting. There are no cases in the literature on the management of children with presenting with cyclical vomiting syndrome and a Chiari malformation type I. DISCUSSION: We report the case of a 12-year-old child diagnosed with cyclical vomiting syndrome and a Chiari malformation type I. The patient received symptomatic relief following a craniocervical decompression...
September 11, 2017: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/28892202/syringomyelia-and-craniocervical-junction-abnormalities-in-chihuahuas
#4
A-M Kiviranta, C Rusbridge, O Laitinen-Vapaavuori, A Hielm-Björkman, A K Lappalainen, S P Knowler, T S Jokinen
BACKGROUND: Chiari-like malformation (CM) and syringomyelia (SM) are widely reported in Cavalier King Charles Spaniels and Griffon Bruxellois dogs. Increasing evidence indicates that CM and SM also occur in other small and toy breed dogs, such as Chihuahuas. OBJECTIVES: To describe the presence of SM and craniocervical junction (CCJ) abnormalities in Chihuahuas and to evaluate the possible association of CCJ abnormalities with SM. To describe CM/SM-related clinical signs and neurologic deficits and to investigate the association of CM/SM-related clinical signs with signalment, SM, or CCJ abnormalities...
September 11, 2017: Journal of Veterinary Internal Medicine
https://www.readbyqxmd.com/read/28885133/the-addition-of-duraplasty-to-posterior-fossa-decompression-in-the-surgical-treatment-of-pediatric-chiari-malformation-type-i-a-systematic-review-and-meta-analysis-of-surgical-and-performance-outcomes
#5
Victor M Lu, Kevin Phan, Sean P Crowley, David J Daniels
OBJECTIVE Surgery is the definitive treatment of Chiari malformation Type I (CM-I). It involves posterior fossa decompression, which can be performed along with C-1 laminectomy, reconstructive duraplasty, or tonsil shrinkage. The aim of this study was to provide an updated systematic review and meta-analysis of the latest available evidence regarding posterior fossa decompression only (PFDO) versus posterior fossa decompression with duraplasty (PFDD) in the treatment of CM-I in children. METHODS A literature search was performed in compliance with the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines for article identification, screening, eligibility, and inclusion...
September 8, 2017: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/28867320/complete-reversibility-of-the-chiari-type-ii-malformation-following-post-natal-repair-of-myelomeningocele
#6
P A Beuriat, A Szathmari, C Rousselle, I Sabatier, F di Rocco, C Mottolese
INTRODUCTION: It was believed that Chiari type II malformation (CM-II) was always present in a myelomeningocele (MMC). In fact, it is associated in about 80 % of cases. Improvement of the hindbrain herniation after prenatal closure of MMC has challenged the idea that this condition was irreversible. Only two studies report ascent of the cerebellar tonsil after post-natal closure. This work aimed to study a large group of MMC patients who benefitted from a post-natal repair to evaluate the rate of long-term total reversibility of CM-II...
August 31, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28863007/intraoperative-neurophysiologic-monitoring-for-prediction-of-postoperative-neurological-improvement-in-a-child-with-chiari-type-i-malformation
#7
Yukari Kawasaki, Susumu Uchida, Kouhei Onishi, Masako Toyokuni, Kazuo Okanari, Minoru Fujiki
INTRODUCTION: Although many surgical treatment strategies for Chiari malformation type I (CM-I) have been reported, the most appropriate surgical technique remains controversial. It is wholly ascribable to the complicacy of pathological condition in CM-I. Recently, intraoperative neurophysiologic monitoring (INM) is becoming prevalent in spinal surgery. Indeed, motor-evoked potentials (MEPs) monitoring and somatosensory-evoked potentials (SSEPs) monitoring are standard tools to minimize the risk of neurologic injury and postoperative deficits...
August 31, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28838875/comparison-of-porcine-and-bovine-collagen-dural-substitutes-in-posterior-fossa-decompression-for-chiari-i-malformation-in-adults
#8
Christine K Lee, Tara Mokhtari, Ian D Connolly, Gordon Li, Lawrence M Shuer, Steven D Chang, Gary K Steinberg, Melanie Hayden Gephart
BACKGROUND: Posterior fossa decompression surgeries for Chiari malformations are susceptible to post-operative complications such as pseudomeningocele, external cerebrospinal fluid (CSF) leak, and meningitis. Various dural substitutes have been employed to improve surgical outcomes. OBJECTIVE: This study examined whether the collagen matrix dural substitute type correlated with the incidence of post-operative complications following posterior fossa decompression in adult patients with Chiari I malformations...
August 21, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28838117/technique-for-mini-open-decompression-of-chiari-type-i-malformation-in-adults
#9
Peyman Pakzaban
BACKGROUND: The technique for decompression of Chiari type I malformation relies on open exposure of craniocervical junction for suboccipital craniectomy and upper cervical laminectomy with or without duraplasty. There is no detailed technical report of a minimally invasive approach for Chiari decompression in adults. OBJECTIVE: To describe a mini-open technique for decompression of Chiari type I malformation (including duraplasty) in adults. METHODS: Six consecutive adult patients with symptomatic Chiari type I malformation underwent decompression through a 3 to 4 cm midline incision via a speculum retractor...
August 1, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28832085/suitability-of-foramen-magnum-measurements-in-sex-determination-and-their-clinical-significance
#10
Ayfer Metin Tellioglu, Yasemin Durum, Mustafa Gok, Sacide Karakas, Ayse Gizem Polat, Can Zafer Karaman
BACKGROUND: The foramen magnum provides a transition between fossa cranii posterior and canalis vertebralis. Medulla oblongata, arteria vertebralis and nervus accessorius spinal part pass through the foramen magnum. In this study, we aimed to make the morphometric measurements of the foramen magnum on CT and to determine the feasibility of sex determination based on these measurements. Besides sex determination, from a clinical aspect, it is important to know the measurements of the foramen magnum in the normal population in terms of diseases characterized by displacement of the posterior fossa structures through foramen magnum to upper cervical spinal canal like Chiari Malformations and Syringomyelia...
August 23, 2017: Folia Morphologica (Warsz)
https://www.readbyqxmd.com/read/28826656/a-morphometric-assessment-of-type-i-chiari-malformation-above-the-mcrae-line-a-retrospective-case-control-study-in-302-adult-female-subjects
#11
James R Houston, Maggie S Eppelheimer, Soroush Heidari Pahlavian, Dipankar Biswas, Aintzane Urbizu, Bryn A Martin, Jayapalli Rajiv Bapuraj, Mark Luciano, Philip A Allen, Francis Loth
PURPOSE: Type I Chiari malformation (CMI) is a radiologically-defined structural dysmorphism of the hindbrain and posterior cranial fossa (PCF). Traditional radiographic identification of CMI relies on the measurement of the cerebellar tonsils in relation to the foramen magnum with or without associated abnormalities of the neuraxis. The primary goal of this retrospective study was to comprehensively assess morphometric parameters above the McRea line in a group of female CMI patients and normal controls...
August 18, 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/28807779/syringo-subarachnoid-shunt-for-the-treatment-of-persistent-syringomyelia-following-decompression-for-chiari-type-i-malformation-surgical-results
#12
Jehuda Soleman, Jonathan Roth, Andrea Bartoli, Daniel Rosenthal, Akiva Korn, Shlomi Constantini
BACKGROUND: Approximately 30% of patients treated by foramen magnum decompression (FMD) for Chiari I-associated-syringomyelia will show persistence, recurrence, or progression of the syrinx. OBJECTIVE: This study evaluates the clinical and radiological outcome of syringo-subarachnoid shunt (SSS) as the treatment for persistent syringomyelia after FMD. METHODS: Data was collected retrospectively. The primary outcome measurement was neurological function (assessed with the Modified Japanese Orthopedic Association (mJOA) scale)...
August 11, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28804039/surgical-decompression-for-chiari-malformation-type-i-an-age-based-outcomes-study-based-on-the-chicago-chiari-outcome-scale
#13
Holly S Gilmer, Mengqiao Xi, Sonja H Young
BACKGROUND: There is currently inadequate evidence on efficacy of surgical decompression for Chiari malformation type I (CM1) across different age groups. OBJECTIVE: To compare postoperative outcomes between different age groups using the Chicago Chiari Outcome Scale (CCOS). METHODS: 144 patients who underwent Chiari decompression at our institution between 2008 and 2014 were divided into 3 groups, Group A (children ages 0-18 years), Group B (younger adults ages 19-40 years), and Group C (older adults ages 41 years and above)...
August 4, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28799840/standardized-method-for-the-measurement-of-grabb-s-line-and-clival-canal-angle
#14
Jonathan E Martin, Markus Bookland, Douglas Moote, Catherine Cebulla
OBJECTIVE Grabb's line-the perpendicular distance from the basion-C2 line (pB-C2)-is a widely used radiographic measurement with significant clinical implications in patients with a complex Chiari malformation. Rigorous demonstration of the reproducibility of this measurement has not previously been reported. The authors report a standardized measurement technique with excellent inter- and intrarater reliability on T1-weighted sagittal MRI. METHODS The authors developed a standardized measurement technique that included specifications of midline slice selection, landmark and reference line definitions, and measurement technique on T1-weighted sagittal images...
August 11, 2017: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/28761520/computed-tomographic-study-of-posterior-cranial-fossa-foramen-magnum-and-its-surgical-implications-in-chiari-malformations
#15
Showkathali Iqbal, Ambooken P Robert, Dominic Mathew
OBJECTIVE: The aim of this study is to measure the height and volume of the bony part of the posterior cranial fossa (PCF) and the surface area of the foramen magnum (FM) using computed tomography (CT) scans and to correlate our clinical findings with the available current literature. MATERIALS AND METHODS: This cross-sectional study was conducted in a tertiary care referral hospital in the Southern part of India during the period from January 2015 to August 2015...
July 2017: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/28758373/fetal-cerebral-ventricular-dilatation-etiopathogenic-study-of-130-observations
#16
Sihem Darouich, Lucile Boutaud, Bettina Bessières, Maryse Bonnière, Jelena Martinovic, Charlotte Mechler, Caroline Alby, Jean-Pierre Bernard, Philippe Roth, Yves Ville, Valerie Malan, Michel Vekemans, Tania Attié-Bitach, Férechté Encha-Razavi
BACKGROUND: Fetal cerebral ventricular dilatation (CVD) is a common abnormal prenatal finding that often predicts a poor prognosis. The etiology involves both genetic and nongenetic factors with diverse pathogenic mechanisms. We describe the neuropathological features of CVD in a large cohort of fetuses. The goals are to determine the physiopathological mechanisms and etiologies. METHODS: We retrospectively analyzed a series of 130 fetuses examined at the Necker University Hospital following termination of pregnancy between January 2000 and December 2014...
July 31, 2017: Birth defects research
https://www.readbyqxmd.com/read/28756364/chiari-i-malformation-with-underlying-pseudotumor-cerebri-poor-symptom-relief-following-posterior-decompression-surgery
#17
Ahmed Alnemari, Tarek R Mansour, Stephanie Gregory, William K Miller, Mark Buehler, Daniel Gaudin
INTRODUCTION: 
 Pseudotumor cerebri (PTC) patients exhibit clear clinical signs and symptoms of higher intracranial pressure (ICP) without ventricular enlargement or mass lesions. The clinical picture of patients with PTC can sometimes be similar to that of Chiari Malformation type I (CMI). There is some evidence that Chiari I malformation and PTC may coexist, which raises the question of whether PTC is an idiopathic disease or a complication of posterior decompression surgery-treatment of choice for Chiari I malformation...
2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28754644/subdural-fluid-collection-and-hydrocephalus-after-foramen-magnum-decompression-for-chiari-malformation-type-i-management-algorithm-of-a-rare-complication-case-report
#18
Zefferino Rossini, Davide Milani, Francesco Costa, Carlotta Castellani, Giovanni Lasio, Maurizio Fornari
BACKGROUND: Chiari Malformation Type I is a hindbrain abnormality characterized by cerebellar tonsils descent beneath the foramen magnum, frequently associated with symptoms or brainstem compression, impaired cerebrospinal fluid circulation and syringomyelia. Foramen magnum decompression represents the most common way of treatment. Rarely, subdural fluid collection and hydrocephalus represent postoperative adverse events. The treatment of this complication is still debated, and physicians sometimes are faced with the doubt of when undergoing diversion surgery and when more conservative managements...
July 25, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28743389/cerebrospinal-fluid-leakage-and-chiari-i-malformation-with-gorham-s-disease-of-the-skull-base-a-case-report
#19
Hiroaki Nagashima, Katsu Mizukawa, Masaaki Taniguchi, Yusuke Yamamoto, Eiji Kohmura
BACKGROUND: Gorham's syndrome is a rare bone disorder characterized by massive osteolysis of unknown etiology. There are no reports of comorbidity involving cerebrospinal fluid (CSF) leakage and Chiari I malformation with Gorham's syndrome. Here, we report an unusual case of an acute presyrinx state complicated by bacterial meningitis due to CSF leakage and Chiari I malformation associated with Gorham's disease of the skull base. CASE PRESENTATION: A 25-year-old woman with Chiari I malformation associated with Gorham's syndrome presented with aggressive paresthesia following bacterial meningitis...
July 13, 2017: Neurologia i Neurochirurgia Polska
https://www.readbyqxmd.com/read/28739670/teaching-neuroimages-the-charcot-shoulder-chiari-malformation-with-syringomyelia-associated-with-arthropathy
#20
Leonardo F Bocca, Thiago Y Tonholo Silva, Benno Ejnisman, José Luiz Pedroso, Orlando G Barsottini
No abstract text is available yet for this article.
July 25, 2017: Neurology
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