Full Text Journal Articles about
Chiari Malformation

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Ventrolateral Tonsillar Position Defines Novel Chiari 0.5 Classification.

Peter F Morgenstern, Umberto Tosi, Rafael Uribe-Cardenas, Jeffrey P Greenfield,

BACKGROUND:Cervicomedullary compression in young children has been described in the context of Chiari type 1 malformation, with symptoms associated with the extent of tonsillar herniation below McRae line. Historically, Chiari type 1 malformation has been defined by tonsillar herniation of at least 5 mm. However, in certain populations, including very ... Read more >>

World Neurosurg (World neurosurgery)
[2020, 136:444-453]

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An analysis of clinical risk factors for adolescent scoliosis caused by spinal cord abnormalities in China: proposal for a selective whole-spine MRI examination scheme.

Wei Xu, Xiangyang Zhang, Ying Zhu, Xiaodong Zhu, Zhikun Li, Dachuan Li, Jianjun Jia, Liwei Chen, Silian Wang, Yushu Bai, Ming Li,

BACKGROUND:Approximately 80% of adolescent scoliosis cases are idiopathic, and some non-idiopathic scoliosis cases caused by spinal cord abnormalities are misdiagnosed as idiopathic scoliosis. This study examined the risk factors for non-idiopathic scoliosis with intramedullary abnormalities, explored the feasibility of whole-spine MRI, and provided a theoretical basis for the routine diagnosis ... Read more >>

BMC Musculoskelet Disord (BMC musculoskeletal disorders)
[2020, 21(1):187]

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Posterior fossa dimensions of Chiari malformation patients compared with normal subjects: systematic review and metanalysis.

Ricardo Vieira Botelho, Lindolfo Carlos Heringer, Pedro B Botelho, Rosimary Amorim Lopes, Jaques Waisberg,

BACKGROUND:Chiari malformation (CM) is defined as a herniation of cerebellar tonsils below foramen magnum and is considered as secondary to the underdevelopment of posterior fossa bone components. There is then an overcrowding of neural structures and frequently block in normal cerebrospinal fluid circulation. Although several papers published measurements of dimensions ... Read more >>

World Neurosurg (World neurosurgery)
[2020, :]

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Neuroanatomic Correlates for the Neuropsychological Manifestations of Chiari Malformation Type I.

Stephanie N Steinberg, Jeffrey P Greenfield, Kenneth Perrine,

Chiari malformation comprises a spectrum of congenital malformations characterized by a herniation of the cerebellar tonsils below the foramen magnum. Chiari malformation type I (CM-I) is the most prevalent subtype seen in clinical practice. This condition variably compresses the cerebellum and medulla-spinal cord junction secondary to malformation of the posterior ... Read more >>

World Neurosurg (World neurosurgery)
[2020, 136:462-469]

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Occipital Condyle Screw Placement in Patients with Chiari Malformation: A Radiographic Feasibility Analysis and Cadaveric Demonstration.

Sertac Kirnaz, Mina M Gerges, Kavelin Rumalla, Antonio Bernardo, Ali A Baaj, Jeffrey P Greenfield,

OBJECTIVE:Patients who undergo decompression surgery for Chiari malformation frequently require occipitocervical fixation. This is typically performed with occipital plates, which may cause intracranial injuries due to multiple fixation points. We undertook this study to assess the feasibility of occipital condyle (OC) screw placement as an alternative method of occipitocervical fixation ... Read more >>

World Neurosurg (World neurosurgery)
[2020, 136:470-478]

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Arnold-Chiari malformation type I and the posterior dislocation of the odontoid process aggravate prolonged weaning in a patient with severe viral pneumonia: a case report.

Renyu Ding, Yulan Meng, Xingjuan Jia, Xiaochun Ma,

BACKGROUND:Prolonged and difficult weaning is associated with higher rates of complications and mortality. Therefore, it is important to identify the associated factors. CASE PRESENTATION:We describe our experience with a 37-year-old man diagnosed with severe viral pneumonia (influenza A). He presented with acute respiratory failure type I on admission. During intubation, ... Read more >>

BMC Pulm Med (BMC pulmonary medicine)
[2020, 20(1):37]

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Iatrogenic occlusion of bilateral jugular veins, subclavian vein, and superior vena cava after repeated jugular cannulation associated with Arnold-Chiari malformation: Successful endovascular treatment.

Przemyslaw Nowakowski, Piotr Buszman, Stefan Kiesz, Pawel Buszman,

An Arnold-Chiari malformation is a congenital central nervous system defect. Raised intracranial pressure is commonly observed, and posterior decompression neurosurgery is the treatment of choice. We describe a patient with iatrogenic occlusion of bilateral jugular veins, subclavian vein, and superior vena cava resulting from repeated central venous cannulations. Because of ... Read more >>

J Vasc Surg Cases Innov Tech (Journal of vascular surgery cases and innovative techniques)
[2020, 6(1):18-20]

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Sleep endoscopy-directed management of Arnold-Chiari malformation: a child with persistent obstructive sleep apnea.

Umakanth Katwa, Carlos Sisniega, Mallory McKeon, Gi Soo Lee,

None:Arnold-Chiari malformations are structural defects in the base of the skull and cerebellum, when part of the cerebellar tonsils herniates through the foramen magnum into the upper spinal canal, compressing against the brainstem. This anatomical defect can be asymptomatic but often presents with symptoms such as headaches, stridor, dysphagia, and ... Read more >>

J Clin Sleep Med (Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine)
[2020, 16(2):325-329]

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Luckenschadel Associated with Chiari Type II Malformation: An Autopsy Case Report.

Sihem Darouich,

Background: Luckenschadel is commonly associated with Chiari II malformation and myelomeningocele. The aim of this case report was to revisit this entity. Case report: Antenatal imaging performed at 32 weeks gestation showed severe hydrocephalus with brain parenchymal thinning, cerebellar hypoplasia and lumbar myelomeningocele, suggestive of Chiari type II malformation. Stillbirth occurred ... Read more >>

Fetal Pediatr Pathol (Fetal and pediatric pathology)
[2020, :1-5]

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Re: a case of a pharmacoresistant tachyarrhythmia associated with Arnold-Chiari malformation.

Luis Rafael Moscote-Salazar, Ezequiel Garcia-Ballestas, Rafael Martinez-Perez, Amit Agrawal, Harold Vasquez,

Br J Neurosurg (British journal of neurosurgery)
[2020, :1]

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A Combinatorial Approach with Cerebellar Tonsil Suspension to Treating Symptomatic Chiari Malformation Type I in Adults: A Retrospective Study.

Lei Wang, Hongyang Zhao, Wende Zhu, Pengfei Yan, Yang D Teng,

BACKGROUND:Primary Chiari malformations (CM) are congenital defects of the skull base and brain. Among the four CM types, type I (CM-I) occurs most frequently and may cause somatosensorimotor, autonomic and vision symptoms. Presently, posterior fossa decompression alone (PFD) or with duraplasty (PFDD) and cerebellar tonsil (CbT) shrinkage tactics are standard ... Read more >>

World Neurosurg (World neurosurgery)
[2020, :]

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Acute presentation of Chiari 1 malformation in children.

Giuseppe Talamonti, Eleonora Marcati, Giulia Gribaudi, Marco Picano, Giuseppe D'Aliberti,

PURPOSE:To review the literature about the acute presentation of Chiari 1 malformation in children, with a focus on acute cervical cord syndromes with impairment of the cortico-spinal tract. To analyze the possible precipitating factors and the pathophysiology of the acute onset. METHOD:Illustrative case presentation with literature review. RESULTS:The literature includes ... Read more >>

Childs Nerv Syst (Child's nervous system : ChNS : official journal of the International Society for Pediatric Neurosurgery)
[2020, :]

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Treatment Options for Hydrocephalus Following Foramen Magnum Decompression for Chiari I Malformation: A Multicenter Study.

Andrea Bartoli, Jehuda Soleman, Assaf Berger, Jeffrey H Wisoff, Eveline Teresa Hidalgo, Francesco T Mangano, Robert F Keating, Ulrich W Thomale, Frederick Boop, Jonathan Roth, Shlomi Constantini,

BACKGROUND:New-onset hydrocephalus following foramen magnum decompression (FMD) for Chiari I malformation (CM-I) is rare; its natural history and pathophysiology are poorly understood. OBJECTIVE:To describe a series of patients who developed hydrocephalus following FMD for CM-I, provide possible explanations of this phenomenon, and outline treatment options. METHODS:Out of patients undergoing FMD ... Read more >>

Neurosurgery (Neurosurgery)
[2020, 86(4):500-508]

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Chiari 1 malformation: age-based outcomes in a paediatric surgical cohort.

Charles Yates, Robert Campbell, Martin Wood, Raymond Chaseling, Gert Tollesson, Norman Ma,

PURPOSE:Substantial evidence exists describing differences between paediatric and adult Chiari 1 malformation (CM1) patients. Differences in clinical presentation between very young (0-6 years old) and older (7-18 years old) paediatric patients is similarly well-established. However, progression on these findings with regard to surgical outcomes is limited. We aimed to establish whether inter-paediatric ... Read more >>

Childs Nerv Syst (Child's nervous system : ChNS : official journal of the International Society for Pediatric Neurosurgery)
[2020, :]

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Prevalence and Impact of Underlying Diagnosis and Comorbidities on Chiari 1 Malformation.

Brooke Sadler, Timothy Kuensting, Jennifer Strahle, Tae Sung Park, Matthew Smyth, David D Limbrick, Matthew B Dobbs, Gabe Haller, Christina A Gurnett,

BACKGROUND:Chiari malformation type 1 affects approximately one in 1,000 people symptomatically, although one in 100 meet radiological criteria, making it a common neurological disorder. The diagnosis of underlying conditions has become more sophisticated, and new radiological markers of disease have been described. We sought to determine the prevalence and impact ... Read more >>

Pediatr. Neurol. (Pediatric neurology)
[2020, :]

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Cerebrospinal fluid area and syringogenesis in Chiari malformation type I.

Davis G Taylor, Ajay Chatrath, Panagiotis Mastorakos, Gabriella Paisan, Ching-Jen Chen, Thomas J Buell, John A Jane,

OBJECTIVE:Syringogenesis in Chiari malformation type I (CM-I) is thought to occur secondary to impaction of the cerebellar tonsils within the foramen magnum (FM). However, the correlation between the CSF area and syringogenesis has yet to be elucidated. The authors sought to determine whether the diminution in subarachnoid space is associated ... Read more >>

J. Neurosurg. (Journal of neurosurgery)
[2020, :1-6]

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Persistent Syringomyelia After Posterior Fossa Decompression for Chiari Malformation.

Umberto Tosi, Jacques Lara-Reyna, John Chae, Roshann Sepanj, Mark M Souweidane, Jeffrey P Greenfield,

BACKGROUND:Chiari malformation (CM) is often comorbid with syringomyelia. The treatment of CM via posterior fossa decompression (PFD) may not improve syringomyelia in up to 40% of patients, based on historical cohorts. Management of these patients is problematic, as both reoperation and syrinx shunting have high failure rates in the long ... Read more >>

World Neurosurg (World neurosurgery)
[2020, 136:454-461.e1]

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Variant sella morphology and pituitary gland height in adult patients with Chiari II malformation: potential pitfall in MRI evaluation.

Dhruv Patel, Amit Saindane, Nelson Oyesiku, Ranliang Hu,

PURPOSE:To systematically evaluate the sella morphology and pituitary gland height on brain MRI of Chiari II malformation (C2M) patients to understand the observed high incidence of apparent enlargement of the pituitary gland. METHODS:Brain MRIs of C2M patients at a single tertiary care adult institution were retrospectively reviewed. We also evaluated ... Read more >>

Clin Imaging (Clinical imaging)
[2020, 64:24-28]

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Postnatal Intracranial Findings Following Fetal Repair of Spinal Dysraphisms.

Susana Calle, Eliana Bonfante, Garrett Simmons, Jason Rogers, Clark Sitton, Katrina Hughes, Ramesh M Papanna, Roy Riascos, Rajan Patel,

OBJECTIVE:Our objective is to document the imaging appearance in the intracranial compartment at the time of the infants' first postnatal brain MR imaging after fetal repair for spinal dysraphisms. METHODS:Twenty-nine patients were evaluated on fetal and postnatal magnetic resonance imaging for a series of features of Chiari II malformation. RESULTS:Of ... Read more >>

J Comput Assist Tomogr (Journal of computer assisted tomography)
[2020, 44(1):65-69]

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Regarding "The Interpeduncular Angle: A Practical and Objective Marker for the Detection and Diagnosis of Intracranial Hypotension on Brain MRI".

J Zhang, H Wang, L Dong, Y Li,

AJNR Am J Neuroradiol (AJNR. American journal of neuroradiology)
[2020, 41(1):E1]

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Regarding "the Interpeduncular Angle: A Practical and Objective Marker for the Detection and Diagnosis of Intracranial Hypotension on Brain MRI".

J Zhang, L Dong, H Wang, Y Li,

AJNR Am J Neuroradiol (AJNR. American journal of neuroradiology)
[2020, 41(1):E2]

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The role of clivus length and cranial base flexion angle in basilar invagination and Chiari malformation pathophysiology.

Juliete M Diniz, Ricardo V Botelho,

BACKGROUND:The craniovertebral junction is an anatomically well-defined transitional zone located between the skull and the cervical spine. Multiple malformations can affect this region with the most prominent being basilar invagination (BI) and Chiari malformation (CM). Despite numerous studies, the origin, pathophysiology, and classification of these pathologies remain controversial. The objective ... Read more >>

Neurol. Sci. (Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology)
[2020, :]

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CSF goes astray no matter what is in the way: occipital intradiploic pseudomeningocele and de novo syringomyelia following foramen magnum decompression for Chiari I malformation in a pediatric patient.

Arthur R Kurzbuch, Shailendra Magdum,

Nontraumatic intradiploic pseudomeningoceles and de novo syringomyelia formation are very rare entities. The authors have previously reported the case of a 4-year-old girl who underwent foramen magnum decompression without dural closure for Chiari I malformation. Three years after the operation an intradiploic pseudomeningocele was documented, but the patient was lost ... Read more >>

J Neurosurg Pediatr (Journal of neurosurgery. Pediatrics)
[2020, :1-6]

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Chiari Malformation and Syringomyelia Associated with Hirayama Disease.

Atul Goel, Neha Jadhav, Abhidha Shah, Survendra Rai, Ravikiran Vutha,

BACKGROUND:To the best of our knowledge, the presence of Chiari formation and Hirayama disease in the same patient has not been previously reported. On the basis of the presented case, we have attempted to identify the common pathogenesis of both of these clinical entities. CASE DESCRIPTION:We have reported a case ... Read more >>

World Neurosurg (World neurosurgery)
[2020, 135:241-244]

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Bilateral Bochdalek Hernias Associated with Arnold-Chiari I Malformation.

Julian Fazi, Visad Patel, Cara Bryan,

A Bochdalek hernia is a posterolateral diaphragmatic defect that is either congenital or acquired. The contents of the hernia range from fat to intra-abdominal organs. They are primarily pathologies of neonates and most commonly occur unilaterally. These hernias have been described in isolation and as one part of a group ... Read more >>

Case Rep Radiol (Case reports in radiology)
[2020, 2020:1931879]

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