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Type 1 chiari

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https://www.readbyqxmd.com/read/28291422/comparison-of-posterior-fossa-volumes-and-clinical-outcomes-after-decompression-of-chiari-malformation-type-i
#1
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
#2
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
https://www.readbyqxmd.com/read/28217389/management-of-parturients-in-active-labor-with-arnold-chiari-malformation-tonsillar-herniation-and-syringomyelia
#3
Ramsis F Ghaly, Tatiana Tverdohleb, Kenneth D Candido, Nebojsa Nick Knezevic
BACKGROUND: Arnold-Chiari malformation Type 1 (ACM-1) in parturients is a topic of ongoing discussion between obstetricians and anesthesiologists. The primary unanswered question remains; How should the anesthesia provider proceed with labor analgesia and anesthesia for cesarean section when confronted with an advanced, asymptomatic, or minimally symptomatic case of ACM-1 during labor? CASE DESCRIPTION: A 24-year-old, ASA II, G1P0 full-term parturient presented to Labor and Delivery for vaginal delivery...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/28171875/applicability-of-cone-beam-computed-tomography-to-the-assessment-of-the-vocal-tract-before-and-after-vocal-exercises-in-normal-subjects
#4
Elisângela Zacanti Garcia, Hélio Kiitiro Yamashita, Davi Sousa Garcia, Marina Martins Pereira Padovani, Renata Rangel Azevedo, Brasília Maria Chiari
BACKGROUND/AIMS: Cone beam computed tomography (CBCT), which represents an alternative to traditional computed tomography and magnetic resonance imaging, may be a useful instrument to study vocal tract physiology related to vocal exercises. This study aims to evaluate the applicability of CBCT to the assessment of variations in the vocal tract of healthy individuals before and after vocal exercises. METHODS: Voice recordings and CBCT images before and after vocal exercises performed by 3 speech-language pathologists without vocal complaints were collected and compared...
February 8, 2017: Folia Phoniatrica et Logopaedica
https://www.readbyqxmd.com/read/28156254/population-based-description-of-familial-clustering-of-chiari-malformation-type-i
#5
Diana Abbott, Douglas Brockmeyer, Deborah W Neklason, Craig Teerlink, Lisa A Cannon-Albright
OBJECTIVE A population-based genealogical resource with linked medical data was used to define the observed familial clustering of Chiari malformation Type I (CM-I). METHODS All patients with CM-I were identified from the 2 largest health care providers in Utah; those patients with linked genealogical data were used to test hypotheses regarding familial clustering. Relative risks (RRs) in first-, second-, and third-degree relatives were estimated using internal cohort-specific CM-I rates; the Genealogical Index of Familiality (GIF) test was used to test for an excess of relationships between all patients with CM-I compared with the expected distribution of relationships for matched control sets randomly selected from the resource...
February 3, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28052881/headache-outcomes-in-children-undergoing-foramen-magnum-decompression-for-chiari-i-malformation
#6
Saba Raza-Knight, Kshitij Mankad, Prab Prabhakar, Dominic Thompson
OBJECTIVE: A common symptom of Chiari I malformation (CIM) is headache, which is diagnosed using non-validated criteria from the International Headache Society (IHS). CIM-associated headaches should resolve following neurosurgical treatment of the malformation by foramen magnum decompression (FMD). We aimed to validate the IHS criteria and determine (1) the efficacy of FMD in treating headache and (2) whether duraplasty confers an advantage over simple bony decompression in the treatment of this symptom...
January 4, 2017: Archives of Disease in Childhood
https://www.readbyqxmd.com/read/27991500/high-frequency-of-diabetic-ketoacidosis-at-diagnosis-of-type-1-diabetes-in-italian-children-a-nationwide-longitudinal-study-2004-2013
#7
Valentino Cherubini, Edlira Skrami, Lucia Ferrito, Stefano Zucchini, Andrea Scaramuzza, Riccardo Bonfanti, Pietro Buono, Francesca Cardella, Vittoria Cauvin, Giovanni Chiari, Giuseppe D Annunzio, Anna Paola Frongia, Dario Iafusco, Ippolita Patrizia Patera, Sonia Toni, Stefano Tumini, Ivana Rabbone, Fortunato Lombardo, Flavia Carle, Rosaria Gesuita
This longitudinal population-based study analyses the frequency of diabetic ketoacidosis (DKA) at type 1 diabetes diagnosis in Italian children under 15 years of age, during 2004-2013. DKA was defined as absent (pH ≥ 7.30), mild/moderate (7.1 ≤ pH < 7.30) and severe (pH < 7.1). Two multiple logistic regression models were used to evaluate the time trend of DKA frequency considered as present versus absent and severe versus absent, adjusted for gender, age group and geographical area of residence at diagnosis...
December 19, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27921214/external-validity-of-the-chiari-severity-index-and-outcomes-among-pediatric-chiari-i-patients-treated-with-intra-or-extra-dural-decompression
#8
Jared M Pisapia, Maxwell B Merkow, Danielle Brewington, Rosemary E Henn, Leslie N Sutton, Phillip B Storm, Gregory G Heuer
INTRODUCTION: Chiari malformation type-1 (CM-1) may be treated by intradural (ID) or extradural (ED) posterior fossa decompression, although the optimal approach is debated. The Chiari Severity Index (CSI) is a pre-operative metric to predict patient-defined improvement after CM-1 surgery. In this study, we evaluate the results of ID versus ED decompression and assess the external validity of the CSI. METHODS: We performed a retrospective cohort study of pediatric CM-1 patients undergoing decompression at a single academic children's hospital...
December 5, 2016: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/27910704/the-safety-of-nivolumab-for-the-treatment-of-advanced-non-small-cell-lung-cancer
#9
REVIEW
Giulio Metro, Biagio Ricciuti, Marta Brambilla, Sara Baglivo, Irene Soli, Elisa Minenza, Giulia Costanza Leonardi, Alessandro D'arpino, Daniela Colabrese, Marco Tazza, Daniela Zicari, Vincenzo Minotti, Rita Chiari
Immune checkpoint blockaders (ICBs) act by unbalancing the immune system, thus favoring the development of an immune-mediated antitumor effect. ICBs targeting the programmed cell death receptor-1 (PD-1) have recently been investigated in a number of advanced tumors, including non-small cell lung cancer (NSCLC). Nivolumab, a fully human IgG4 kappa directed against PD-1, has been the first ICB to be approved for second-line treatment of advanced NSCLC. Areas covered: In this review we focus on the clinical development of nivolumab for the treatment of advanced NSCLC, with an emphasis on its safety profile...
January 2017: Expert Opinion on Drug Safety
https://www.readbyqxmd.com/read/27863925/number-and-function-of-circulating-endothelial-progenitor-cells-in-patients-with-primary-budd-chiari-syndrome
#10
Rui Huang, Qingqiao Zhang, Qianxin Huang, Maoheng Zu, Hao Xu, Lingyu Zeng
BACKGROUND AND AIM: Primary Budd-Chiari syndrome (BCS) is associated with vascular endothelial injury. Circulating endothelial progenitor cells (EPCs) provide an endogenous mechanism to repair endothelial injury. This study investigated the levels and functionality of EPCs in patients with primary BCS. METHODS: EPCs (CD34(+)/CD133(+)/KDR(+)) were quantified in 82 patients with primary BCS (inferior vena cava type: n=19; hepatic vein type: n=22; and mixed type: n=41), 10 cirrhosis controls (CC group) and 10 age-matched healthy controls (HC group), using flow cytometry...
November 15, 2016: Clinics and Research in Hepatology and Gastroenterology
https://www.readbyqxmd.com/read/27857798/not-all-cases-of-nyctalopia-are-benign-unusual-and-serendipitous-presentation-of-arnold-chiari-type-1-malformation-at-a-pediatric-tertiary-care-center
#11
Kailash Chandra Patra, Abhijeet Prakash Kirtane
The Arnold-Chiari Type 1 malformation (CM1) is a rare congenital abnormality characterized by ectopia or caudal herniation of the cerebellar tonsils through the foramen magnum into the cervical spine, resulting in crowding at the craniocervical junction. It seldom presents in childhood with symptoms and a normal neurological examination. More typically, CM1 presents in young adult women with neurological symptoms including a headache, cervical pain, cranial nerve palsies, neurosensory deficit, and ataxia. Ocular manifestations associated with Chiari I include third and sixth cranial nerve paresis and convergence/divergence abnormalities...
July 2016: Journal of Pediatric Neurosciences
https://www.readbyqxmd.com/read/27798986/chiari-related-hydrocephalus-assessment-of-clinical-risk-factors-in-a-cohort-of-297-consecutive-patients
#12
Jian Guan, Jay Riva-Cambrin, Douglas L Brockmeyer
OBJECTIVE Patients treated for Chiari I malformation (CM-I) with posterior fossa decompression (PFD) may occasionally and unpredictably develop postoperative hydrocephalus. The clinical risk factors predictive of this type of Chiari-related hydrocephalus (CRH) are unknown. The authors' objective was to evaluate their experience to identify risk factors that may predict which of these patients undergoing PFD will develop CRH after surgery. METHODS The authors performed a retrospective clinical chart review of all patients who underwent PFD surgery and duraplasty for CM-I at the Primary Children's Hospital in Utah from June 1, 2005, through May 31, 2015...
November 2016: Neurosurgical Focus
https://www.readbyqxmd.com/read/27797679/long-term-outcome-and-analysis-of-dysfunction-of-transjugular-intrahepatic-portosystemic-shunt-placement-in-chronic-primary-budd-chiari-syndrome
#13
Georges Hayek, Maxime Ronot, Aurélie Plessier, Annie Sibert, Mohamed Abdel-Rehim, Magaly Zappa, Pierre-Emmanuel Rautou, Dominique Valla, Valérie Vilgrain
Purpose To evaluate the long-term safety, technical success, and efficacy of transjugular intrahepatic portosystemic shunt (TIPS) in a series of patients with Budd-Chiari syndrome (BCS), and to determine the predictors of shunt dysfunction. Materials and Methods From 2004 to 2013, all patients with primary BCS referred for TIPS placement were included in the study. The primary and secondary technical success rates and the number and types of early (ie, before day 7) complications were noted. Factors associated with dysfunction were analyzed with uni- and multivariate analyses...
April 2017: Radiology
https://www.readbyqxmd.com/read/27780855/impact-of-tp53-mutations-on-outcome-in-egfr-mutated-patients-treated-with-first-line-tyrosine-kinase-inhibitors
#14
Matteo Canale, Elisabetta Petracci, Angelo Delmonte, Elisa Chiadini, Claudio Dazzi, Maximilian Papi, Laura Capelli, Claudia Casanova, Nicoletta De Luigi, Marita Mariotti, Alessandro Gamboni, Rita Chiari, Chiara Bennati, Daniele Calistri, Vienna Ludovini, Lucio Crinò, Dino Amadori, Paola Ulivi
PURPOSE: To analyze the impact of TP53 mutations on response to first-line tyrosine kinase inhibitors (TKIs) in patients with epidermal growth factor receptor (EGFR)-mutated non-small cell lung cancer (NSCLC). EXPERIMENTAL DESIGN: 136 EGFR-mutated NSCLC patients receiving first-line TKIs were analyzed. TP53 mutations were evaluated in 123 patients in relation to disease control rate (DCR), objective response rate (ORR), progression-free survival (PFS) and overall survival (OS)...
October 25, 2016: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/27743249/the-association-between-the-pulse-pressure-gradient-at-the-cranio-cervical-junction-derived-from-phase-contrast-magnetic-resonance-imaging-and-invasively-measured-pulsatile-intracranial-pressure-in-symptomatic-patients-with-chiari-malformation-type-1
#15
Radek Frič, Erika Kristina Lindstrøm, Geir Andre Ringstad, Kent-André Mardal, Per Kristian Eide
BACKGROUND: In symptomatic Chiari malformation type 1 (CMI), impaired intracranial compliance (ICC) is associated with an increased cranio-spinal pulsatile pressure gradient. Phase-contrast magnetic resonance imaging (MRI) represents a non-invasive modality for the assessment of the pulse pressure gradient at the cranio-cervical junction (CCJ). We wished to explore how the MRI-derived pulse pressure gradient (MRI-dP) compares with invasively measured pulsatile intracranial pressure (ICP) in CMI, and with healthy controls...
October 14, 2016: Acta Neurochirurgica
https://www.readbyqxmd.com/read/27742430/non-contrast-enhanced-mr-angiography-in-the-diagnosis-of-budd-chiari-syndrome-bcs-compared-with-digital-subtraction-angiography-dsa-preliminary-results
#16
Chun Yang, Ceng Li, Mengsu Zeng, Xin Lu, Jingjing Li, Jiali Wang, Muhammad Umair Sami, Kai Xu
Non-CE MRA techniques (true steady-state free-precession, SSFP) have been used effectively for the selective visualization of the portal venous system and inferior vena cava. Budd-Chiari Syndrome (BCS) encompasses a number of conditions that cause the obstruction of the hepatic outflow tract from the small hepatic veins to the junction of the inferior vena cava (IVC) and right atrium. The purpose of this study was to diagnose BCS with IVC obstruction using respiratory triggered three-dimensional (3D) true SSFP with T-SLIP and compare to digital subtraction angiography (DSA)...
October 11, 2016: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/27696820/virus-like-particle-display-of-the-%C3%AE-gal-epitope-for-the-diagnostic-assessment-of-chagas-disease
#17
Carlos Ramon Nascimento Brito, Craig S McKay, Maíra Araújo Azevedo, Luíza Costa Brandão Santos, Ana Paula Venuto, Daniela Ferreira Nunes, Daniella Alchaar D'Ávila, Gisele Macedo Rodrigues da Cunha, Igor Correia Almeida, Ricardo Tostes Gazzinelli, Lucia Maria Cunha Galvão, Egler Chiari, Carlos A Sanhueza, M G Finn, Alexandre Ferreira Marques
The α-Gal antigen [Galα(1,3)Galβ(1,4)GlcNAcα] is an immunodominant epitope displayed by infective trypomastigote forms of Trypanosoma cruzi, the causative agent of Chagas disease. A virus-like particle displaying a high density of α-Gal was found to be a superior reagent for the ELISA-based serological diagnosis of Chagas disease and the assessment of treatment effectiveness. A panel of sera from patients chronically infected with T. cruzi, both untreated and benznidazole-treated, was compared with sera from patients with leishmaniasis and from healthy donors...
December 9, 2016: ACS Infectious Diseases
https://www.readbyqxmd.com/read/27688061/microwave-ablation-for-hepatocellular-carcinoma-associated-with-budd-chiari-syndrome-after-transarterial-chemoembolization-an-analysis-of-ten-cases
#18
Jian-Ping Dou, Jie Yu, Zhi-Yu Han, Fang-Yi Liu, Zhi-Gang Cheng, Ping Liang
PURPOSE: To evaluate the feasibility, efficacy, and safety of microwave ablation (MWA) in the treatment of hepatocellular carcinoma associated with Budd-Chiari syndrome (BCS) after transarterial chemoembolization (TACE). METHODS: A total of 10 patients (mean 50.0 ± 7.5 years) with 15 BCS-associated HCC lesions were retrospectively evaluated. All patients received MWA treatment for residual tumors after 1 to 3 sessions of TACE. The diagnosis of residual tumors was confirmed by at least two types of enhanced imaging...
September 29, 2016: Abdominal Radiology
https://www.readbyqxmd.com/read/27665041/hospitalization-cost-model-of-pediatric-surgical-treatment-of-chiari-type-1-malformation
#19
Sandi K Lam, Rory R Mayer, Thomas G Luerssen, I Wen Pan
OBJECTIVES: To develop a cost model for hospitalization costs of surgery among children with Chiari malformation type 1 (CM-1) and to examine risk factors for increased costs. STUDY DESIGN: Data were extracted from the US National Healthcare Cost and Utilization Project 2009 Kids' Inpatient Database. The study cohort was comprised of patients aged 0-20 years who underwent CM-1 surgery. Patient charges were converted to costs by cost-to-charge ratios. Simple and multivariable generalized linear models were used to construct cost models and to determine factors associated with increased hospital costs of CM-1 surgery...
September 21, 2016: Journal of Pediatrics
https://www.readbyqxmd.com/read/27651871/surgical-outcome-of-adult-idiopathic-chiari-malformation-type-1
#20
Woon Tak Yuh, Chi Heon Kim, Chun Kee Chung, Hyun-Jib Kim, Tae-Ahn Jahng, Sung Bae Park
OBJECTIVE: The pathophysiology of idiopathic Chiari malformation (CM) type 1 is disturbance of free cerebrospinal fluid (CSF) flow and restoration of normal CSF flow is the mainstay of treatment. Additional migration of the medulla oblongata in pediatric patients is referred to as CM type 1.5, but its significance in adult patients is unknown. This study is to compare surgical outcomes of adult idiopathic CM type 1.5 with that of type 1. METHODS: Thirty-eight consecutive adult patients (M : F=11 : 27; median, 33...
September 2016: Journal of Korean Neurosurgical Society
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