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Arachnoiditis

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https://www.readbyqxmd.com/read/28332154/altered-cerebrospinal-fluid-dynamics-in-neurofibromatosis-type-l-severe-arachnoid-thickening-in-patients-with-neurofibromatosis-type-1-may-cause-abnormal-csf-dynamic
#1
Young Sill Kang, Eun-Kyung Park, Yong-Oock Kim, Ju-Seong Kim, Dong-Seok Kim, U W Thomale, Kyu-Won Shim
INTRODUCTION: The object of this study is to understand abnormal dynamic of cerebrospinal fluid (CSF) in patients with neurofibromatosis type 1 (NF1), which may cause temporal lobe herniation and bulging of temporal fossa. METHODS: Four patients, three females and one male, with NF1 were studied retrospectively. They presented with a similar craniofacial deformity, which consisted of pulsatile exophthalmos, an enlarged bony orbit, dysplasia of the sphenoid wing with the presence of a herniation of the temporal lobe into the orbit, and a bulging temporal fossa...
March 22, 2017: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/28327950/a-new-classification-for-pathologies-of-spinal-meninges-part-2-primary-and-secondary-intradural-arachnoid-cysts
#2
Jörg Klekamp
BACKGROUND: Spinal intradural arachnoid cysts are rare causes of radiculopathy or myelopathy. Treatment options include resection, fenestration, or cyst drainage. OBJECTIVE: To classify intradural spinal arachnoid cysts and present results of their treatment. METHODS: Among 1519 patients with spinal space occupying lesions, 130 patients demonstrated intradural arachnoid cysts. Neuroradiological and surgical features were reviewed and clinical data analyzed...
March 10, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28318981/idiopathic-intradural-dorsal-thoracic-arachnoid-cysts-a-case-series-and-review-of-the-literature
#3
Heath French, Arjuna Somasundaram, Michael Biggs, Jonathon Parkinson, Rodney Allan, Jonathon Ball, Nicholas Little
BACKGROUND: Spinal intradural arachnoid cysts (SIAC) are cerebrospinal fluid (CSF) filled sacs formed by arachnoid membranes and may be either idiopathic or acquired. Idiopathic cysts represent a separate entity and their aetiology remains uncertain. By far the most difficult differential diagnosis is distinguishing between idiopathic anterior spinal cord herniation (IASCH) and dorsal thoracic intradural arachnoid cysts (TIAC), due to their similarity in radiological appearance. Cine-mode (SSFP) is emerging as a novel technique in the diagnosis and operative planning of SIAC...
March 17, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28317110/atlantic-frugivory-a-plant-frugivore-interaction-dataset-for-the-atlantic-forest
#4
Carolina Bello, Mauro Galetti, Denise Montan, Marco A Pizo, Tatiane C Mariguela, Laurence Culot, Felipe Bufalo, Fabio Labecca, Felipe Pedrosa, Rafaela Constantini, Carine Emer, Wesley R Silva, Fernanda R da Silva, Otso Ovaskainen, Pedro Jordano
The dataset provided here includes 8320 frugivory interactions (records of pairwise interactions between plant and frugivore species) reported for the Atlantic Forest. The dataset includes interactions between 331 vertebrate species (232 birds, 90 mammals, five fishes, one amphibian and three reptiles) and 788 plant species. We also present information on traits directly related to the frugivory process (endozoochory), such as the size of fruits and seeds and the body mass and gape size of frugivores. Data were extracted from 166 published and unpublished sources spanning from 1961 to 2016...
March 19, 2017: Ecology
https://www.readbyqxmd.com/read/28300929/oculoectodermal-syndrome-twentieth-described-case-with-new-manifestations
#5
Daniela de Almeida Figueiras, Deborah Maria de Castro Barbosa Leal, Valter Kozmhinsky, Marina Coutinho Domingues Querino, Marina Genesia da Silva Regueira, Maria Gabriela de Morais Studart
Oculoectodermal syndrome is a rare disease characterized by the association of aplasia cutis congenita, epibulbar dermoids, and other abnormalities. This report describes the twentieth case of the disease. We report a 4-year-old female child who presented with the classical features of the syndrome: aplasia cutis congenita and epibulbar dermoids. Our case expands the clinical spectrum of the disease to include: diffuse hyperpigmentation (some following the Blaschko´s lines); hypopigmented skin areas on the trunk; arachnoid cyst on the right fronto-parietal border; rounded left side of the hippocampus; and dermoid cyst underlying the bulb-medullary transition...
September 2016: Anais Brasileiros de Dermatologia
https://www.readbyqxmd.com/read/28298013/does-subjective-improvement-in-adults-with-intracranial-arachnoid-cysts-justify-surgical-treatment
#6
Katrin Rabiei, Per Hellström, Mats Högfeldt-Johansson, Magnus Tisell
OBJECTIVE Subjective improvement of patients who have undergone surgery for intracranial arachnoid cysts has justified surgical treatment. The current study aimed to evaluate the outcome of surgical treatment for arachnoid cysts using standardized interviews and assessments of neuropsychological function and balance. The relationship between arachnoid cyst location, postoperative improvement, and arachnoid cyst volume was also examined. METHODS The authors performed a prospective, population-based study. One hundred nine patients underwent neurological, neuropsychological, and physiotherapeutic examinations...
February 17, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28295149/enlarged-posterior-fossa-on-prenatal-imaging-differential-diagnosis-associated-anomalies-and-post-natal-outcome
#7
Anja Wüest, Daniel Surbek, Roland Wiest, Christian Weisstanner, Harald Bonel, Maja Steinlin, Luigi Raio, Boris Tutschek
INTRODUCTION: The primary aim of this study was to ascertain the prevalence the individual conditions and of associated anomalies in fetuses with the prenatal diagnosis of enlarged posterior fossa and to explore the diagnostic accuracy of ultrasound in these anomalies. The secondary aim was to evaluate the post-natal outcome of children affected by posterior fossa anomalies. MATERIAL AND METHODS: All fetuses with enlarged posterior fossa detected by prenatal sonography at a referral center from 2001-2015 were analyzed retrospectively...
March 14, 2017: Acta Obstetricia et Gynecologica Scandinavica
https://www.readbyqxmd.com/read/28287894/spinal-arachnoid-cysts-our-experience-and-review-of-literature
#8
Kanwaljeet Garg, Sachin Anil Borkar, Shashank Sharad Kale, Bhawani Shankar Sharma
OBJECTIVE: Arachnoid cysts are discrete pockets of CSF or CSF-like fluid found adjacent to normal CSF spaces, either spinal or cranial. Spinal arachnoid cysts (SAC) are most commonly extradural, however intradural or perineural are also described. METHODS: All patients admitted to our center and surgically treated with a diagnosis of SAC, were included in the study. The results were analyzed in terms of the clinical symptoms, location of cyst, surgical procedure performed and outcome following surgery...
April 2017: British Journal of Neurosurgery
https://www.readbyqxmd.com/read/28285405/the-effects-of-blood-and-blood-products-on-the-arachnoid-cell
#9
Eric A Hansen, Liudmila Romanova, Christopher Janson, Cornelius H Lam
After traumatic brain injury (TBI), large amounts of red blood cells and hemolytic products are deposited intracranially creating debris in the cerebrospinal fluid (CSF). This debris, which includes heme and bilirubin, is cleared via the arachnoid granulations and lymphatic systems. However, the mechanisms by which erythrocytes and their breakdown products interfere with normal CSF dynamics remain poorly defined. The purpose of this study was to model in vitro how blood breakdown products affect arachnoid cells at the CSF-blood barrier, and the extent to which the resorption of CSF into the venous drainage system is mechanically impaired following TBI...
March 11, 2017: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/28281443/central-nervous-system-tuberculosis
#10
John M Leonard
Central nervous system tuberculosis (CNS-TB) takes three clinical forms: meningitis (TBM), intracranial tuberculoma, and spinal arachnoiditis. TBM predominates in the western world and presents as a subacute to chronic meningitis syndrome with a prodrome of malaise, fever, and headache progressing to altered mentation and focal neurologic signs, followed by stupor, coma, and death within five to eight weeks of onset. The CSF formula typically shows a lymphocytic pleocytosis, and low glucose and high protein concentrations...
March 2017: Microbiology Spectrum
https://www.readbyqxmd.com/read/28274959/arachnoid-mater
#11
Adam A Dmytriw
No abstract text is available yet for this article.
March 8, 2017: Medical Humanities
https://www.readbyqxmd.com/read/28272727/-an-unusual-presentation-of-painful-tic-convulsive
#12
S Romano-Feinholz, M P Medina, F E Nares-Lopez, J L Soto-Hernandez, R Revuelta-Gutierrez
INTRODUCTION: The term 'painful tic convulsive' is used to describe the syndrome involving concomitant hemifacial spasm and ipsilateral trigeminal neuralgia. Vascular compression of the fifth and seventh cranial nerves is the most common cause, involving the entry and exit zone of rootlets coming from the brainstem; nevertheless, different etiologies of this syndrome has been previously reported. Treatment for this disease is based on surgical microvascular decompression of the nerve rootlets, but still a topic of debate...
March 16, 2017: Revista de Neurologia
https://www.readbyqxmd.com/read/28267188/the-relationship-of-three-dimensional-human-skull-motion-to-brain-tissue-deformation-in-magnetic-resonance-elastography-studies
#13
Andrew A Badachhape, Ruth J Okamoto, Ramona S Durham, Brent D Efron, Sam J Nadell, Curtis L Johnson, Philip V Bayly
In traumatic brain injury (TBI), membranes such as the dura mater, arachnoid mater, and pia mater play a vital role in transmitting motion from the skull to brain tissue. Magnetic resonance elastography (MRE) is an imaging technique developed for noninvasive estimation of soft tissue material parameters. In MRE, dynamic deformation of brain tissue is induced by skull vibrations during magnetic resonance imaging (MRI); however, skull motion and its mode of transmission to the brain remain largely uncharacterized...
May 1, 2017: Journal of Biomechanical Engineering
https://www.readbyqxmd.com/read/28255617/immobile-cerebral-veins-in-the-context-of-positional-brain-shift-an-undescribed-risk-factor-for-acute-subdural-hemorrhage
#14
Satoshi Tsutsumi, Hideo Ono, Yukimasa Yasumoto
BACKGROUND: Changes in head position are thought to cause a degree of brain shift in the intracranial cavity. However, little is known on the concurrent shift of the cerebral veins. The present study aimed to investigate the positional shift of the cerebral veins that accompanies brain shift. METHODS: Sagittal T2-weighted magnetic resonance imaging was performed on 21 consecutive patients lying in the supine and prone positions, using the same sequence. For each patient, imaging data were obtained for the two positions as a pair of images with morphologically best-matched cerebral contours...
March 3, 2017: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/28246242/arachnoid-cysts-and-adult-onset-epilepsy
#15
Trisha Mackle, Daryl Wile
No abstract text is available yet for this article.
February 21, 2017: CMAJ: Canadian Medical Association Journal, Journal de L'Association Medicale Canadienne
https://www.readbyqxmd.com/read/28238523/posterior-reversible-encephalopathy-syndrome-pres-with-sub-arachnoid-haemorrhage-after-bevacizumab-and-5-fu
#16
Jennifer Massey
PRES is a neurological syndrome characterised by reversible subcortical vasogenic brain oedema in patients with acute neurological signs and symptoms. It occurs in the context of fluctuations in blood pressure, renal failure, autoimmune disorders, eclamptic syndromes and with use of cytotoxic drugs. We present the case of a 60year old female with advanced bowel cancer who was admitted with seizures and sub-arachnoid haemorrhage, with radiographic features of PRES, shortly after receiving bevacizumab (Avastin), a VEGF-inhibitor...
February 23, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28229291/a%C3%A2-patient-with-myasthenia-gravis-and-a%C3%A2-large-arachnoid-cyst-report-of-a%C3%A2-case
#17
Mira Bucuk, Iva Gasparovic, Ivan Sonnenschein, Olivio Perkovic
Myasthenia gravis is a chronic autoimmune disease characterized by weakening of voluntary muscles during the day and a marked restitution of function during the night and after rest. The symptoms may worsen over days or weeks, sometimes even in a few hours, and are usually well controlled by appropriate therapy. Arachnoid cysts are congenital or acquired deformities of the arachnoid membrane and are usually too small to cause distinct clinical symptomatology. We describe a case of a 76-year-old myasthenia gravis patient with an arachnoid cyst...
February 22, 2017: Wiener Klinische Wochenschrift
https://www.readbyqxmd.com/read/28188624/an-unusual-cause-of-progressive-headache-herniation-of-the-cerebellar-gyrus-into-the-intraosseous-arachnoid-granulation
#18
Hayri Ogul, Mecit Kantarci
No abstract text is available yet for this article.
February 11, 2017: Headache
https://www.readbyqxmd.com/read/28186449/efficacy-and-outcomes-of-facial-nerve-sparing-treatment-approach-to-cerebellopontine-angle-meningiomas
#19
Randy S D'Amico, Matei A Banu, Petros Petridis, Alexandra S Bercow, Hani Malone, Moshe Praver, Tony J C Wang, Steven R Isaacson, Michael B Sisti
OBJECTIVE Advanced microsurgical techniques contribute to reduced morbidity and improved surgical management of meningiomas arising within the cerebellopontine angle (CPA). However, the goal of surgery has evolved to preserve the quality of the patient's life, even if it means leaving residual tumor. Concurrently, Gamma Knife radiosurgery (GKRS) has become an acceptable and effective treatment modality for newly diagnosed, recurrent, or progressive meningiomas of the CPA. The authors review their institutional experience with CPA meningiomas treated with GKRS, surgery, or a combination of surgery and GKRS...
February 10, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28178009/isolated-ectopic-cutaneous-atypical-meningioma-of-the-scalp-another-mimicker-of-primary-adnexal-tumor
#20
Jonathan Konopinski, Victor G Prieto, Doina Ivan, Priyadharsini Nagarajan, Michael T Tetzlaff, Jonathan L Curry, Carlos A Torres-Cabala, Gregory N Fuller, Phyu P Aung
Cutaneous meningiomas are rare tumors most commonly located in the skin and soft tissue of the scalp. They may be congenital (type I), acquired and derived from ectopic arachnoid tissue in the skin (type II), or arise through direct extension from an intracranial meningioma (type III). Despite their well-established documentation in the literature, they may escape recognition when classic features are not present. Herein, we present a case of a cutaneous atypical meningioma (≥4 mitotic figures/10 High Power Fields (HPF)) on the posterior scalp of a 31-year-old man with histologic features mimicking a malignant adnexal tumor...
January 25, 2017: American Journal of Dermatopathology
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