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chiari malformation

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https://www.readbyqxmd.com/read/28427119/-genetic-analysis-of-posterior-cranial-fossa-morphology-in-families-of-chiari-malformation-type-%C3%A2
#1
X X Yuan, Y Li, S F Sha, W X Sun, Y Qiu, Z Liu, W G Zhu, Z Z Zhu
Objective: To explore genetic characteristic of posterior cranial fossa morphology in families of Chiari malformation type Ⅰ (CMI). Methods: From April 2010 to May 2016, a total of 47 cases of CMI families (CMI group) and their 94 parents (CMI-P group)collected were retrospectively reviewed in Department of Spinal Surgery, Drum Tower Hospital, School of Medicine, Nanjing University.Another cohort of 50 asymptomatic adults was enrolled to serve as the control group.Patients with skull fracture or other diseases which can lead to secondary CMI were excluded...
April 18, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28416844/clinical-characteristics-of-neurogenic-dysphagia-in-adult-patients-with-chiari-malformation-type-i
#2
T Yu, J Li, K Wang, Y Ge, A C Jiang, L P Duan, Z Y Wang
OBJECTIVE: To investigate changes of swallowing function and associated symptoms in Chiari malformation typeI (CMI) patients with and without dysphagia by the analysis of their clinical and high-resolution manometry (HRM) parameters. METHODS: A total of 42 patients diagnosed with symptomatic CMI without atlantoaxial dislocations which were confirmed by clinical manifestations and magnetic resonance imaging (MRI) findings between January 2010 and July 2015 at Peking University Third Hospital were included in this study...
April 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28409726/the-suboccipital-ligament
#3
Kelsey Alabaster, M Fred Bugg, Bruno Splavski, Frederick A Boop, Kenan I Arnautovic
OBJECTIVE A fibrous structure located dorsal to the dura at the posterior craniocervical junction stretches horizontally between the bilateral occipital condyles and the upper borders of the C-1 laminae. Partially covered by the occipital bone, this structure is always encountered when the bone is removed from the foramen magnum rim during approaches to the posterior cranial fossa. Although known to surgeons, this structure has not been defined, studied, or named. The most appropriate name for this structure is "the suboccipital ligament," and a detailed rationale for this name is provided...
April 14, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28406584/thick-corpus-callosum-in-children
#4
Aviv Schupper, Osnat Konen, Ayelet Halevy, Rony Cohen, Sharon Aharoni, Avinoam Shuper
BACKGROUND AND PURPOSE: A thick corpus callosum (TCC) can be associated with a very grave outcome in fetuses, but its clinical presentation in older children seems to be markedly different. METHODS: The corpus callosum (CC) was defined as thick based on observations and impressions. We reviewed cases of children who were diagnosed as TCC based on brain magnetic resonance imaging (MRI) studies. The pertinent clinical data of these children were collected, and their CCs were measured...
April 2017: Journal of Clinical Neurology
https://www.readbyqxmd.com/read/28403928/-prenatal-diagnosis-of-neural-tube-defects-correlation-between-prenatal-and-postnatal-data
#5
L Matuszewski, E Perdriolle-Galet, I Clerc-Urmès, P Bach-Segura, O Klein, J P Masutti, O Morel
OBJECTIVES: Neural tube defects (NTD) are congenital anomalies that can cause significant neurological long-term disabilities. Theses malformations are accessible to prenatal diagnosis and quite recently, to in utero repair for some myelomeningoceles. The aim of this study was to analyse the correlation between prenatal and postnatal examinations. MATERIALS AND METHODS: A descriptive retrospective monocentric study has been conducted between January 2004 and December 2014 in a tertiary care maternity...
March 2017: J Gynecol Obstet Hum Reprod
https://www.readbyqxmd.com/read/28399105/-treatment-of-syringomyelia-associated-with-chiari-1-malformation
#6
A A Zuev, G V Kostenko
Syringomyelia (SM) develops due to the disturbance of cerebrospinal fluid dynamics, spinal fixation or a spinal tumor. The disturbance of cerebrospinal fluid dynamics in the area of the foramen magnum leads to the progression of SM in Chiari 1 malformation (CM1). CM1 is the most prevalent pathology of craniovertebral junction associated with SM. The prevalence of CM1 varies from 3 to 8 per 100 000 population but SM is diagnosed in 65% of patients with CM1. Clinical symptoms of CM1 and SM include pain in the occipital area, gait disturbances due to sensitive ataxia, dissociated sensory disorders, dysphagia, paresis of the extremities...
2017: Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova
https://www.readbyqxmd.com/read/28384788/neurologic-evaluation-in-children-with-laryngeal-cleft
#7
Ryan D Walker, Alexandria L Irace, Margaret A Kenna, David K Urion, Reza Rahbar
Importance: Referral to a neurologist and imaging play important roles in the management of laryngeal cleft. Swallowing involves a complex series of neuromuscular interactions, and aspiration can result from anatomical causes (eg, laryngeal cleft), neuromuscular disorders, or some combination thereof. To date, no protocols or guidelines exist to identify which patients with laryngeal cleft should undergo neuroimaging studies and/or consultation with a neurologist. Objective: To establish guidelines for neurologic evaluation and imaging techniques to identify or rule out neuromuscular dysfunction in children with laryngeal cleft...
April 6, 2017: JAMA Otolaryngology—Head & Neck Surgery
https://www.readbyqxmd.com/read/28384597/no-significant-difference-between-chiari-malformation-type-1-5-and-type-i
#8
Wei Liu, Hongxing Wu, Yalikun Aikebaier, Maoliti Wulabieke, Rexiti Paerhati, Xiaopeng Yang
OBJECTIVE: Chiari malformation Type 1.5 (CM 1.5) was defined as the association of Chiari malformation Type I (CM I) and brainstem herniation. The objective was to demonstrate the difference of clinical features and surgical outcomes between CM 1.5 and CM I. PATIENTS AND METHODS: All CM 1.5 and CM I adult patients who underwent posterior fossa decompression with duraplasty at our institution between 2006 and 2010 were retrospectively reviewed. Clinical characteristics, imaging features, and long-term outcomes were compared between CM 1...
March 30, 2017: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/28382434/evaluation-of-the-central-sleep-apnea-in-asymptomatic-children-with-chiari-1-malformation-an-open-question
#9
Marco Zaffanello, Francesco Sala, Luca Sacchetto, Emma Gasperi, Giorgio Piacentini
INTRODUCTION: Type I is the most common Chiari malformation in children. In this condition, the lower part of the cerebellum, but not the brain stem, extends into the foramen magnum at the base of the skull leading to intermittent brain hypertension. In symptomatic children, central sleep apneas are shown in polysomnography evaluation. A central apnea index of 1/h or more is considered abnormal, but >5/h is clearly considered pathological. Therefore, central sleep apnea evaluation in pediatric age may show great age-related variability...
April 5, 2017: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/28381106/atypical-cytologic-presentation-of-a-histiocytic-sarcoma-in-a-cavalier-king-charles-spaniel-dog
#10
Lorelei L Clarke, Lisa S Kelly, Bridget Garner, Cathy A Brown
A Cavalier King Charles Spaniel dog was presented because of a 10-d history of progressive vomiting, inappetence, and lethargy, with mild neurologic signs. Fine-needle aspirates of splenic nodules seen on ultrasound were suggestive of a carcinoma. On autopsy, a disseminated neoplasm was present in the lung, spleen, and adrenal glands. Additionally, there was a Chiari-like malformation of the skull with corresponding syringomyelia of the cranial spinal cord. Histologically, the neoplasm was comprised of a pleomorphic population of round cells with a high mitotic rate...
April 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28357166/spontaneous-intracranial-hypotension-presenting-as-a-pseudo-chiari-1
#11
Ali S Haider, Suraj Sulhan, Ian T Watson, Dean Leonard, Eliel N Arrey, Umair Khan, Phu Nguyen, Kennith F Layton
Spontaneous intracranial hypotension (SIH) is classified as a decrease in cerebrospinal fluid (CSF) pressure secondary to a CSF leakage and consequent descent of the brain into the foramen magnum. Diagnosing SIH can be difficult due to its overlapping findings with Arnold-Chiari type 1 Malformation (CM1) where the cerebellar tonsils herniate into the foramen magnum. The similarity of both conditions calls for a more reliable imaging technique to localize the CSF leak which could narrow the differential diagnosis and aid in choosing the correct treatment...
February 16, 2017: Curēus
https://www.readbyqxmd.com/read/28348118/spontaneous-intracranial-hypotension-diagnosed-as-chiari-i-malformation
#12
William Kingston, Joseph Hoxworth, Rashmi Halker-Singh
No abstract text is available yet for this article.
March 28, 2017: Neurology
https://www.readbyqxmd.com/read/28347422/cord-cystic-cavities-syringomyelia-and-prominent-central-canal
#13
Blaise V Jones
Syringomyelia is the term given to cystic cavities in the spinal cord, most of which are associated with congenital malformations of the craniocervical junction and represent dilation of the central canal of the cord. As such, syrinxes can be considered analogous to hydrocephalus. The exact etiology of syrinx formation remains a subject of debate, but there is ample evidence that they are the result of obstruction of the normal flow of cerebrospinal fluid between the intracranial and spinal compartments. The chances that a syrinx will progress over time are much greater when they are associated with a causative lesion (Chiari malformation, tumor, infection, and trauma), but asymptomatic central canal dilation may be a stable incidental finding...
April 2017: Seminars in Ultrasound, CT, and MR
https://www.readbyqxmd.com/read/28342117/otto-mennicke-1876-and-the-first-description-of-skull-base-anomalies-causing-cerebellar-tonsillar-ectopia-one-of-the-first-mentions-of-the-chiari-i-malformation
#14
Fabian N Fries, Philipp Hendrix, Titus J Brinker, Marios Loukas, R Shane Tubbs
INTRODUCTION: Although Hans Chiari made significant and meaningful contributions to our understanding and classification of hindbrain herniations, others have also contributed to this knowledge. One figure who has been lost to history is Otto Mennicke. Herein, we discuss his role in our understanding of tonsillar ectopia and his life and connection to Hans Chiari. CONCLUSIONS: Our knowledge of what is now known as the Chiari malformations has been shaped by several clinicians including Otto Mennicke...
March 24, 2017: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/28328605/unusual-association-cerebral-arteriovenous-malformation-and-chiari-type-i-malformation
#15
Hayri Ogul, Mecit Kantarci
Cerebral arteriovenous malformation (AVM) is a common type of cerebral vascular malformation. The imaging findings are enlarged vessels, thrombosed sinuses, and hemorrhage or gliosis on adjacent brain parenchyma. Magnetic resonance (MR) imaging can be used safely for diagnosis. Chiari type I malformation is characterized by a caudal descent of the cerebellar tonsil. Coincidence of cerebral AVM and Chiari type I malformation is very rare. In this paper, the authors report MR imaging findings of a patient with coincidence of cerebral AVM and Chiari type I malformation...
March 21, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28326451/application-of-endoscopic-third-ventriculostomy-for-treating-hydrocephalus-correlated-chiari-type-i-malformation-in-a-single-chinese-neurosurgery-centre
#16
Yiping Wu, Chuzhong Li, Xuyi Zong, Xinsheng Wang, Songbai Gui, Caiping Gu, Yazhuo Zhang
The correlation between hydrocephalus and Chiari type I malformation (CIM) has been debated since Chiari's first descriptions of CIM but some studies have shown that CIM and hydrocephalus (HCP) could cause symptoms/disease of each other or vice versa. Recent research has found that treatment focused on hydrocephalus with ventricle enlargement also provides alleviation of CIM and even of syringomyelia. However, the lack of consensus among previous studies left unanswered the question of how endoscopic third ventriculostomy (ETV) addresses CIM and why it fails...
March 22, 2017: Neurosurgical Review
https://www.readbyqxmd.com/read/28321315/prolonged-expiratory-apnoea-with-cyanosis-in-arnold-chiari-ii-malformation
#17
Adnan Zafar, Nahin Hussain
Apnoea associated with Arnold Chiari malformation is a known entity and can be obstructive or central. Differentiating between two types is vital to deciding management pathway and prognosticating disease process.
March 2017: JRSM Open
https://www.readbyqxmd.com/read/28296378/-type-i-chiari-malformation-associated-with-cerebellar-atrophy-case-report
#18
Luis Rafael Moscote-Salazar, Willem Guillermo Calderón-Miranda, Hernando Raphael Alvis-Miranda, Ángel Lee-Aguirre, Gabriel Alcalá-Cerra
Chiari malformation is characterized by caudal displacement of the cerebellar tonsils that penetrate into the spinal canal through the foramen magnum, achieving reach the atlas or axis. trunk and any drop of the fourth ventricle is observed. Typically is seen in young adults. In some cases scoliosis and Syringomyelic cavities may occur. The authors present (as far as they know) the first case in the literature with long term follow-up, of a caucasian woman with an unusual form of cerebellar atrophy and Chiari Type I malformation, suffering from weakness in his upper and lower extremities with rapidly progression...
March 2017: Revista Médica del Instituto Mexicano del Seguro Social
https://www.readbyqxmd.com/read/28291422/comparison-of-posterior-fossa-volumes-and-clinical-outcomes-after-decompression-of-chiari-malformation-type-i
#19
Siri Sahib S Khalsa, Alan Siu, Tiffani A DeFreitas, Justin M Cappuzzo, John S Myseros, Suresh N Magge, Chima O Oluigbo, Robert F Keating
OBJECTIVE Previous studies have indicated an association of Chiari malformation Type I (CM-I) and a small posterior fossa. Most of these studies have been limited by 2D quantitative methods, and more recent studies utilizing 3D methodologies are time-intensive with manual segmentation. The authors sought to develop a more automated tool to calculate the 3D posterior fossa volume, and correlate its changes after decompression with surgical outcomes. METHODS A semiautomated segmentation program was developed, and used to compare the pre- and postoperative volumes of the posterior cranial fossa (PCF) and the CSF spaces (cisterna magna, prepontine cistern, and fourth ventricle) in a cohort of pediatric patients with CM-I...
February 17, 2017: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/28291403/a-rat-model-of-chronic-syringomyelia-induced-by-epidural-compression-of-the-lumbar-spinal-cord
#20
Ji Yeoun Lee, Shin Won Kim, Saet Pyoul Kim, Hyeonjin Kim, Jung-Eun Cheon, Seung-Ki Kim, Sun Ha Paek, Dachling Pang, Kyu-Chang Wang
OBJECTIVE There has been no established animal model of syringomyelia associated with lumbosacral spinal lipoma. The research on the pathophysiology of syringomyelia has been focused on Chiari malformation, trauma, and inflammation. To understand the pathophysiology of syringomyelia associated with occult spinal dysraphism, a novel animal model of syringomyelia induced by chronic mechanical compression of the lumbar spinal cord was created. METHODS The model was made by epidural injection of highly concentrated paste-like kaolin solution through windows created by partial laminectomy of L-1 and L-5 vertebrae...
February 17, 2017: Journal of Neurosurgery. Spine
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