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Arachnoiditis

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https://www.readbyqxmd.com/read/29327862/endoscopic-fenestration-of-a-posterior-fossa-arachnoid-cyst-to-treat-a-chiari-like-headache
#1
Matteo Vitali, Andrea Cattalani, Vincenzo M Grasso, Alessandro Bertuccio, Andrea Barbanera
No abstract text is available yet for this article.
January 10, 2018: Journal of Neurosurgical Sciences
https://www.readbyqxmd.com/read/29325964/spontaneous-repeated-disappearance-and-recurrence-of-multiple-spinal-intradural-arachnoid-cysts-in-a-child
#2
Kenyu Hayashi, Keishi Makino, Takashi Nakagawa, Shigetoshi Yano
BACKGROUND: Spinal intradural arachnoid cysts are rare in the pediatric population. We present a very rare case of intradural spinal arachnoid cysts that spontaneously and repeatedly disappeared and reoccurred. CASE DESCRIPTION: A 2-year-and-8-months-old boy presenting with lower extremity weakness was found to have spinal intradural arachnoid cysts in cervical and thoracolumbar regions at separate times. Although spontaneous disappearance of both lesions was observed, surgical treatment was finally performed for the symptomatic recurrent thoracolumbar lesion...
January 8, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29325937/histopathological-analysis-of-tamoxifen-on-epidural-fibrosis
#3
Yasar Ozturk, Ismail Bozkurt, Mesut Emre Yaman, Yahya Guvenc, Tolga Tolunay, Deniz Billur, Fatma Kubra Erbay, Salim Senturk, Gokhan Bozkurt
BACKGROUND: Epidural fibrosis is a challenging topic in spinal surgery. This phenomenon constitutes one of the the main reasons behind "post-laminectomy syndrome" or "failed-back surgery syndrome", which leads to persistent back and leg pain in association with compression and/or stretching the nerve root or the dura. The exact mechanism of action in epidural fibrosis is complex and remains uncertain. Excessive deposition of collagen, fibronectin, and dermatan sulfate known as "extracellular matrix", and decrease of tissue cellularity results in epidural fibrosis...
January 8, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29321974/an-uncommon-association-with-sub-arachnoid-hemorrhage-in-a-young-man
#4
Ziting Wang, Kep Yong Loh, Qin En Lydia Liew, Chern Hwee Raymond Siew, Guan Lin Lincoln Tan
No abstract text is available yet for this article.
March 2018: Urology Case Reports
https://www.readbyqxmd.com/read/29313911/spinal-cord-injury-arising-in-anaesthesia-practice
#5
REVIEW
D W Hewson, N M Bedforth, J G Hardman
Spinal cord injury arising during anaesthetic practice is a rare event, but one that carries a significant burden in terms of morbidity and mortality. In this article, we will review the pathophysiology of spinal cord injury. We will then discuss injuries relating to patient position, spinal cord hypoperfusion and neuraxial techniques. The most serious causes of spinal cord injury - vertebral canal haematoma, spinal epidural abscess, meningitis and adhesive arachnoiditis - will be discussed in turn. For each condition, we draw attention to practical, evidence-based measures clinicians can undertake to reduce their incidence, or mitigate their severity...
January 2018: Anaesthesia
https://www.readbyqxmd.com/read/29308182/a-marsupialized-retrovermian-arachnoid-cyst-and-psychotic-symptoms
#6
Amal Ben Dahman, Philippe David, Nicolas Massager, Samuel Leistedt, Gwenolé Loas
In this article, we report a male patient that developed psychotic symptoms after the excision of an arachnoid cyst from the posterior fossa detected by magnetic resonance and subsequent clinical improvement after anti-psychotic treatment.
August 2017: Journal of Surgical Case Reports
https://www.readbyqxmd.com/read/29307353/leptomeningeal-metastasis
#7
Sophie Taillibert, Marc C Chamberlain
Leptomeningeal metastasis (LM) results from dissemination of cancer cells to both the leptomeninges (pia and arachnoid) and cerebrospinal fluid (CSF) compartment. Breast cancer, lung cancer, and melanoma are the most common solid tumors that cause LM. Recent approval of more active anticancer therapies has resulted in improvement in survival that is partly responsible for an increased incidence of LM. Neurologic deficits, once manifest, are mostly irreversible, and often have a significant impact on patient quality of life...
2018: Handbook of Clinical Neurology
https://www.readbyqxmd.com/read/29302913/principles-and-applications-of-the-balanced-steady-state-free-precession-sequence-in-small-animal-low-field-mri
#8
Mario Ricciardi
Magnetic resonance imaging (MRI) in small animal practice is largely based on classic two-dimensional spin-echo, inversion recovery and gradient-echo sequences which are largely limited by low spatial resolution, especially in low-field (LF)-MRI scanners. Nowadays, however, the availability of volumetric sequences can open new perspectives and enhance the diagnostic potential of this imaging modality. Balanced steady-state free precession (bSSFP) is a three-dimensional gradient-echo sequence in which image contrast is given by the ratio of T2 and T1, resulting in low soft-tissue signal, poor cerebral grey/white matter distinction and a bright signal from free fluid and fat...
January 4, 2018: Veterinary Research Communications
https://www.readbyqxmd.com/read/29288239/late-onset-recurrence-of-neurological-deficits-after-surgery-for-spinal-arachnoid-diverticula
#9
Emili Alcoverro, James Fraser McConnell, Daniel Sanchez-Masian, Luisa De Risio, Steven De Decker, Rita Gonçalves
Spinal cord dysfunction secondary to spinal arachnoid diverticula (SAD) has been widely reported in the veterinary literature and there is some suggestion that surgical treatment may provide better outcomes than medical treatment. Despite this, previous reports have mentioned cases with recurrence of clinical signs following surgical treatment but the cause for this has not been further investigated. The medical records of seven dogs and one cat which presented for investigation of recurrence of neurological deficits at least six months after surgery for SAD were retrospectively reviewed...
December 29, 2017: Veterinary Record
https://www.readbyqxmd.com/read/29285405/prepontine-arachnoid-cyst-presenting-with-headache-and-diplopia-a-case-report-study
#10
Omidvar Rezaee, Kaveh Ebrahimzadeh, Ehsan Nazari Maloumeh, Armin Jafari, Misagh Shafizad, Mohammad Hallajnejad
Background: Arachnoid cysts are found everywhere in cerebrospinal axis, most often in the middle cranial fossa. They are very rare in prepontine location. Case Description: In this study, we report a 26-year-old female presenting with a 3-month history of headache and diplopia. On physical examination, she had clinical manifestations of sixth cranial nerve palsy. Magnetic resonance imaging revealed a prepontine arachnoid cyst with extension into interpeduncular and suprasellar cisterns...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/29285404/cervicothoracic-syringomyelia-caused-by-cervical-spinal-stenosis-case-report-and-literature-review
#11
Mohamed Badri, Ghassen Gader, Kamel Bahri, Ihsen Zammel
Background: Syringomyelia is commonly associated with Chiari malformations, spinal trauma, arachnoiditis, or tumors. However, rarely, cervical canal stenosis is implicated in intramedullary cavitations. Case Discription: Here, we report the case of a 60-year-old male patient who presented with loss of pain and temperature sensation in upper extremities associated with a spastic tetraparesis. On magnetic resonance imaging, the patient was found to have syringomyelia extending from C1 to Th3...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/29283289/molecular-characterization-of-perivascular-drainage-pathways-in-the-murine-brain
#12
Melanie-Jane Hannocks, Michelle E Pizzo, Jula Huppert, Tushar Despande, N Joan Abbott, Robert G Thorne, Lydia Sorokin
Perivascular compartments surrounding central nervous system (CNS) vessels have been proposed to serve key roles in facilitating cerebrospinal fluid flow into the brain, CNS waste transfer, and immune cell trafficking. Traditionally, these compartments were identified by electron microscopy with limited molecular characterization. Using cellular markers and knowledge on cellular sources of basement membrane laminins, we here describe molecularly distinct compartments surrounding different vessel types and provide a comprehensive characterization of the arachnoid and pial compartments and their connection to CNS vessels and perivascular pathways...
January 1, 2017: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/29283104/repair-of-tegmen-tympani-defect-presenting-with-spontaneous-cerebrospinal-fluid-otorrhea-using-the-middle-cranial-fossa-approach
#13
Said Sönmez, Bayram Şahin, Beldan Polat, Şenol Çomoğlu, Kadir Serkan Orhan
Spontaneous cerebrospinal fluid (CSF) otorrhea frequently occurs without temporal bone trauma, fracture, surgery, or any identifiable causes. It is usually associated with tegmen tympani defects of the temporal bone in adults. The congenital origin theory and the arachnoid granulation theory have been accepted to explain the tegmen tympani defect. Magnetic resonance imaging (MRI) and computed tomography (CT) are used to show the defects, brain tissue, and the meninges. We recently encountered three cases of spontaneous CSF otorrhea with a defect on the tegmental plate of the temporal bone...
December 14, 2017: Journal of International Advanced Otology
https://www.readbyqxmd.com/read/29250689/anatomic-variants-in-dandy-walker-complex
#14
Maria Claudia Jurcă, Kinga Kozma, CodruŢa Diana Petcheşi, Marius Bembea, Ovidiu Laurean Pop, Gabriela MuŢiu, Mihaela Cristiana Coroi, Alexandru Daniel Jurcă, Luciana Dobjanschi
Dandy-Walker complex (DWC) is a malformative association of the central nervous system. DWC includes four different types: Dandy-Walker malformation (vermis agenesis or hypoplasia, cystic dilatation of the fourth ventricle and a large posterior fossa); Dandy-Walker variant (vermis hypoplasia, cystic dilatation of the fourth ventricle, normal posterior fossa); mega cysterna magna (large posterior fossa, normal vermis and fourth ventricle) and posterior fossa arachnoid cyst. We present and discuss four cases with different morphological and clinical forms of the Dandy-Walker complex...
2017: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
https://www.readbyqxmd.com/read/29236726/demographic-monitoring-of-wild-muriqui-populations-criteria-for-defining-priority-areas-and-monitoring-intensity
#15
Karen B Strier, Carla B Possamai, Fernanda P Tabacow, Alcides Pissinatti, Andre M Lanna, Fabiano Rodrigues de Melo, Leandro Moreira, Maurício Talebi, Paula Breves, Sérgio L Mendes, Leandro Jerusalinsky
Demographic data are essential to assessments of the status of endangered species. However, establishing an integrated monitoring program to obtain useful data on contemporary and future population trends requires both the identification of priority areas and populations and realistic evaluations of the kinds of data that can be obtained under different monitoring regimes. We analyzed all known populations of a critically endangered primate, the muriqui (genus: Brachyteles) using population size, genetic uniqueness, geographic importance (including potential importance in corridor programs) and implementability scores to define monitoring priorities...
2017: PloS One
https://www.readbyqxmd.com/read/29232814/in-reply-to-the-letter-to-the-editor-regarding-anatomic-dissection-of-arachnoid-membranes-encircling-the-pituitary-stalk-on-fresh-non-formalin-fixed-specimens-anatomoradiologic-correlations-and-clinical-applications-in-craniopharyngioma-surgery
#16
https://www.readbyqxmd.com/read/29232813/letter-to-the-editor-regarding-anatomic-dissection-of-arachnoid-membranes-encircling-the-pituitary-stalk-on-fresh-non-formalin-fixed-specimens-anatomoradiologic-correlations-and-clinical-applications-in-craniopharyngioma-surgery
#17
https://www.readbyqxmd.com/read/29227037/prospective-transfrontal-sheep-model-of-skull-base-reconstruction-using-vascularized-mucosa
#18
Sarina K Mueller, George Scangas, Mansor M Amiji, Benjamin S Bleier
BACKGROUND: No high-fidelity animal model exists to examine prospective wound healing following vascularized reconstruction of the skull base. Such a model would require the ability to study the prospective behavior of vascularized mucosal repairs of large dural and arachnoid defects within the intranasal environment. The objective of this study was to therefore develop and validate a novel, in vivo, transfrontal sheep model of cranial base repair using vascularized sinonasal mucosa. METHODS: Twelve transfrontal craniotomy and 1...
December 11, 2017: International Forum of Allergy & Rhinology
https://www.readbyqxmd.com/read/29219781/a-novel-duraplasty-technique-following-fenestration-of-a-massive-lumbar-arachnoid-cyst-in-a-patient-with-scoliosis-technical-case-report
#19
Matthew T Neal, Randall J Hlubek, Alexander E Ropper, U Kumar Kakarla
When a dural defect is encountered during spine surgery, the dura mater must be reconstituted to minimize the occurrence of minor or major life-threatening sequelae. The neurosurgical literature lacks strategies for managing large dural defects encountered during surgery. The authors describe a 24-year-old man who developed cauda equina syndrome secondary to altered CSF flow in a large thoracolumbar arachnoid cyst. Surgical decompression and fenestration of the arachnoid cyst were performed, and the large dural defect was treated using a multilayer closure with collagen matrix, titanium mesh, and methylmethacrylate...
December 8, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/29209547/an-acquired-form-of-dandy-walker-malformation-with-enveloping-hemosiderin-deposits
#20
Tadashi Shiohama, Ryo Ando, Katsunori Fujii, Hiroki Mukai, Yuki Naruke, Katsuo Sugita, Eiji Kato, Naoki Shimojo
Dandy-Walker malformation (DWM) is a posterior fossa anomaly characterized by hypoplasia and upward rotation of the cerebellar vermis and cystic dilation of the fourth ventricle. The cyst of DWM rarely extends posteriorly to almost completely fill the entire posterior fossa, which mimics primary cerebellar agenesis, a cerebellar porencephalic cyst, and an arachnoid cyst due to the lack of clarity of the thin cystic wall. A 10-month-old female born at 23 weeks' gestation with cerebellar hemorrhage in the neonatal period was admitted to our hospital with dysphagia and side-to-side head bobbing...
2017: Case Reports in Pediatrics
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