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https://www.readbyqxmd.com/read/28533826/a-novel-triage-tool-optic-nerve-sheath-diameter-in-traumatic-brain-injury-and-its-correlation-to-rotterdam-computed-tomography-ct-scoring
#1
Sudha Kiran Das, Sachin P Shetty, Kamal Kumar Sen
BACKGROUND: Optic nerve sheath diameter (ONSD) evaluated in CT imaging as well as Rotterdam CT Score (RCTS) are proven independent predictors of outcome in patients with traumatic brain injury (TBI). To date, no study has correlated ONSD on admission CT scan with RCTS. MATERIAL/METHODS: Retrospective cohort study comprised of consecutive patients undergoing CT imaging for traumatic brain injury recruited between January and October 2015. Bilateral ONSD was measured 3 mm behind the eyeball in axial and sagittal planes and mean value was calculated...
2017: Polish Journal of Radiology
https://www.readbyqxmd.com/read/28531285/paratrigeminal-paraclival-precavernous-or-all-of-the-above-a-circumferential-anatomical-study-of-the-c3-c4-transitional-segment-of-the-internal-carotid-artery
#2
Eleonora Marcati, Norberto Andaluz, Sebastien C Froelich, Lee A Zimmer, James L Leach, Juan Carlos Fernandez-Miranda, Almaz Kurbanov, Jeffrey T Keller
BACKGROUND: Although the term paraclival carotid pervades recent skull base literature, no clear consensus exists regarding boundaries or anatomical segments. OBJECTIVE: To reconcile various internal carotid artery (ICA) nomenclatures for transcranial and endoscopic-endonasal perspectives, we reexamined the transition between lacerum (C3) and cavernous (C4) segments using a C1-C7 segments schema. In this cadaveric study, we obtained a 360°-circumferential view integrating histological, microsurgical, endoscopic, and neuroradiological analyses of this C3-C4 region and identified a distinct transitional segment...
May 21, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28521347/sequential-extradural-release-of-the-v3-vertebral-artery-to-facilitate-intradural-v4-vertebral-artery-reanastomosis-feasibility-of-a-novel-revascularization-technique
#3
Ali Tayebi Meybodi, Michael T Lawton, Arnau Benet
BACKGROUND: Revascularization of the intradural vertebral artery (VA) usually involves V3-V4 bypass using an interposition graft. The interposition of a graft increases surgical time, adds risks, and requires 2 suture lines. OBJECTIVE: To assess the feasibility of an excision-reanastomosis of V4 by sequentially releasing V3. METHODS: Twenty specimens were prepared for surgical simulation of a far-lateral approach. The third and fourth segments of the VA were exposed through the far-lateral approach bilaterally...
June 1, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28515372/spinal-arteriovenous-shunts-angioarchitecture-and-historical-changes-in-classification
#4
Keisuke Takai
The purposes of this study were to review historical changes in the classification of spinal arteriovenous (AV) shunts and to propose a practical classification system. The associated literature regarding the classification of spinal AV shunts was reviewed in the angiography era between 1967 and 2015. The classification systems of spinal AV shunts and a proposed classification system were presented with neuroradiological imaging and medical illustrations. There have been seven major classification systems based on the evolution of diagnostic methods as well as treatments for spinal AV shunts: the first description of spinal AV shunts diagnosed and classified using spinal angiography in 1971; the second classification based on a case report of intradural direct perimedullary arteriovenous fistulas (AVFs) treated by microsurgery in 1987; the third classification based on a case series of intradural perimedullary AVFs treated by endovascular interventions in 1993; the fourth and fifth classification systems based on a case series of spinal AVFs and arteriovenous malformations (AVMs) treated by microsurgery or endovascular interventions in 2002; the sixth classification based on a case series of cranio-spinal dural AV shunts in 2009; and the seventh classification based on a case series of extradural AVFs treated by microsurgery and endovascular interventions in 2011...
May 18, 2017: Neurologia Medico-chirurgica
https://www.readbyqxmd.com/read/28514500/histology-of-the-distal-dural-ring
#5
Christopher S Graffeo, Avital Perry, William R Copeland, Aditya Raghunathan, Michael J Link
BACKGROUND: The distal dural ring (DDR) is a conserved intracranial anatomic structure marking the boundary point at which the internal carotid artery (ICA) exits the cavernous sinus (CS) and enters the subarachnoid space. Although the CS has been well described in a range of anatomic studies, to our knowledge no prior study has analyzed the histologic relationship between the ICA and DDR. Correspondingly, our objective was to assess the relationship of the DDR to the ICA and determine whether the DDR can be dissected from the ICA and thus divided, or can only be circumferentially trimmed around the artery...
May 17, 2017: Clinical Anatomy
https://www.readbyqxmd.com/read/28507828/multiple-large-perineural-tarlov-cysts-in-the-sacrum-of-a-cadaver-a-case-report-and-review
#6
Jocelyn Gonzales, Joe Iwanaga, Nitsa Topale, Rod J Oskouian, R Shane Tubbs
Tarlov or perineural cysts are cerebrospinal fluid (CSF)-filled sacs found between the perineurium and epineurium of the nerve roots. It is still unsure whether the origin of these cysts is intradural or extradural. They can either be asymptomatic or create a variety of negative impacts on comfort and quality of life. In this case report, we describe the presentation of multiple Tarlov cysts including one large cyst discovered during a routine cadaveric spinal dissection and the relevant and related literature...
April 12, 2017: Curēus
https://www.readbyqxmd.com/read/28504994/preoperative-low-dose-aspirin-exposure-and-outcomes-after-emergency-neurosurgery-for-traumatic-intracranial-hemorrhage-in-elderly-patients
#7
Alex T Lee, Arni Gagnidze, Sharon R Pan, Pimwan Sookplung, Bala Nair, Shu-Fang Newman, Alon Ben-Ari, Ahmed Zaky, Kevin Cain, Monica S Vavilala, Irene Rozet
BACKGROUND: Antiplatelet medications are usually discontinued before elective neurosurgery, but this is not an option for emergent neurosurgery. We performed a retrospective cohort study to examine whether preoperative aspirin use was associated with worse outcomes after emergency neurosurgery in elderly patients. METHODS: We analyzed all cases of emergency neurosurgical procedures for traumatic intracranial hemorrhage from 2008 to 2012 at a level 1 trauma center...
May 11, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28503350/clinicoradiologic-profile-of-involvement-and-healing-in-tuberculosis-of-the-spine
#8
R Singh, N K Magu, R K Rohilla
BACKGROUND: There is no much information about how tuberculous lesions of the spine progress/heal; what clinical and radiological features suggest progression/healing; what is the optimal duration of antitubercular treatment; and what clinical, laboratory, and radiological investigations and their frequency should be done to monitor the disease course. AIMS: The present study aimed to evaluate what specific clinicoradiologic features suggest involvement and healing in tuberculosis of the spine...
September 2016: Annals of Medical and Health Sciences Research
https://www.readbyqxmd.com/read/28502561/acute-hydrocephalus-due-to-a-primary-malignant-peripheral-nerve-sheath-tumor-of-the-cervicothoracic-junction-a-case-report-and-review-of-the-literature
#9
Y Samanci, H S Togay, R Yakar, F Kabukcuoglu, S E Celik
BACKGROUND: The estimated incidence of malignant nerve sheath tumors is 0.001% per year, and only 2-3% of those tumors involve the spinal nerves. We present a rare case of acute hydrocephalus caused by primary malignant peripheral nerve sheath tumor of the cervicothoracic junction. CASE DESCRIPTION: A 29-year-old previously healthy male patient, except for a history of two previous surgeries for ulnar nerve entrapment and progressive left upper extremity weakness, presented with acute onset somnolence...
May 11, 2017: Neuro-Chirurgie
https://www.readbyqxmd.com/read/28494650/spinal-metastatic-lung-adenocarcinoma-with-dural-invasion-and-concomitant-intradural-and-extradural-components-a-case-report
#10
Helen Raffalli-Ebezant, Anantharaju Prasad, Arupratan Ray
We report the case of a metastatic lung carcinoma that had metastasized to the thoracic extradural space and penetrated the dura, resulting in a combined extra and intradural spinal tumour. To our knowledge this is the first such report of a metastatic lung adenocarcinoma demonstrating direct dural invasion.
May 12, 2017: British Journal of Neurosurgery
https://www.readbyqxmd.com/read/28488025/in-stent-stenosis-after-p64-flow-diverter-treatment
#11
M Aguilar Pérez, P Bhogal, E Henkes, O Ganslandt, H Bäzner, H Henkes
PURPOSE: There is limited information available on the incidence of in-stent stenosis (ISS) secondary to the use of flow-diverting stents in the intracranial vasculature. We sought to determine the incidence, severity, and clinical course of ISS on angiographic follow-up after treatment of saccular aneurysms with p64. METHODS: We retrospectively reviewed all patients who underwent treatment of a saccular (ruptured and unruptured) intracranial aneurysm with ≥1 p64 between 2011 and 2015...
May 9, 2017: Clinical Neuroradiology
https://www.readbyqxmd.com/read/28484565/multiple-spinal-extradural-arachnoidal-cysts-an-uncommon-cause-of-thoracic-cord-compression
#12
Raghavendra Nayak, Anupkumar Chaudhuri, Shahid Sadique, Sanjeev Attry
Spinal extradural arachnoid cysts are one of the rare causes of symptomatic spinal cord compression. Among them, occurrence of multiple cysts at the same spinal segment is rarely described in the literature. They appear to be extradural outpouchings of arachnoid that communicate with the intraspinal sub-arachnoid space through a small defect in the dura, filled by cerebrospinal fluid. Pathogenesis of these lesions is still unclear. Surgical excision is considered as the gold standard treatment. We present a 7-year-old female child who presented with spastic paraparesis...
April 2017: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/28484555/a-rare-case-of-solid-calcified-intramedullary-neurenteric-cyst-case-report-and-technical-note
#13
Krishna Chaitanya Joshi, Daljit Singh, Sudhir Suggala, Tushit Mewada
Neurenteric cysts are rare lesions of the spinal cord, constituting less than 1.3% of all spinal cord tumors. Approximately 90% of neurenteric cysts are located in the intradural extramedullary compartment, while the remaining 10% are divided between an intradural intramedullary or extradural location. They are usually extramedullary and found in the lower cervical and thoracic spine. We report a case of 8 year old child with totally solid calcified intramedullary cyst which has hitherto not been reported in literature...
April 2017: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/28484544/bilateral-posterior-fossa-and-temporo-occipital-extra-dural-hematomas-a-simple-novel-technique
#14
Ashish Aggarwal, Pravin Salunke, Sameer Futane, Harsimrat Bir Sodhi
Posterior fossa extra-dural hematoma is rare and early diagnosis and management is associated with good outcome. Twenty four year male presented with somnolence and soft tissue swelling of occipital region following road traffic accident. CT scan revealed bilateral posterior fossa with bilateral temporo-occipital Extradural Hematoma (EDH) with mass effect. He was operated through a trifoliate incision and craniotomies leaving a strip of bone over the transverse and occipital sinus. The blood loss with such technique was minimal and the control of sinus tear was easier as the dura on either sides of the sinus can to tied to each other to hitch the sinus up to the bone thereby, providing a good tamponade...
April 2017: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/28484528/extradural-anterior-clinoidectomy-technical-nuances-from-a-learner-s-perspective
#15
Shashwat Mishra, Baltazar Leão, Diego Mendez Rosito
BACKGROUND: Extradural removal of the anterior clinoid process (ACP) is a crucial step in the proper surgical exposure of various pathologies in and around the central skull base. Since the pioneering description by Dolenc, the technique of extradural clinoidectomy has undergone several refinements in the light of improved understanding of microsurgical anatomy and maturation of neurosurgical techniques. Mastery of the surgical nuances involved in performing this surgical exercise will allow the young neurosurgeon to execute this step without undue reluctance and trepidation...
April 2017: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/28484114/vertebral-replacement-for-the-treatment-of-vertebral-osteosarcoma-in-a-cat
#16
Kohei Nakata, Harumi Miura, Hiroki Sakai, Takashi Mori, Sanae Shibata, Hidetaka Nishida, Sadatoshi Maeda, Hiroaki Kamishina
A 7-year-old cat was referred with pelvic limb ataxia. Radiography and CT revealed bone resorption of the L1 vertebral arch, and myelography identified a compressive extradural lesion. The mass was surgically removed and histopathologically diagnosed as giant cell osteosarcoma. Three years later, the recurrent tumor resection and vertebral fixation were performed. Six months later, vertebrectomy was performed to radically excise the recurrent mass and a titanium spinal cage was placed. The cat is alive approximately 5 years after the first surgery...
May 4, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28480086/vertebral-arteriovenous-fistula-an-unwelcome-thrill
#17
Matthew K Edwards, Erica N Christenson, Brian M Corliss, Adam J Polifka, Brandon R Allen
Cervical vertebral AV fistulae are uncommon vascular lesions involving abnormal communication between the extradural vertebral artery and surrounding venous structures. We examine the case of a female evaluated in the emergency department with a vertebral AV fistula presenting classically as pulsatile tinnitus and later successfully treated with standard endovascular techniques. A discussion on the etiology, pathophysiology, and management of vertebral AV fistulae follows.
2017: Case Reports in Emergency Medicine
https://www.readbyqxmd.com/read/28474186/sphenoorbital-meningioma-surgical-series-and-design-of-an-intraoperative-management-algorithm
#18
Lior Gonen, Eytan Nov, Nir Shimony, Ben Shofty, Nevo Margalit
Current surgical removal of sphenoorbital meningiomas (SOM) mainly aims at reduction of proptosis and restoration of visual function; some stages of the surgical technique are controversial. In this study, we aim to present a surgical decision-making algorithm for SOM. A retrospective study of 27 patients who underwent resection of SOM in our center (2005-2014) was conducted. The primary outcomes evaluated were postoperative visual function and radiological exophthalmos. In our study, clinical proptosis was the most common presenting sign (92%), followed by visual loss (37%)...
May 4, 2017: Neurosurgical Review
https://www.readbyqxmd.com/read/28466256/the-effect-of-posterior-fossa-decompression-in-adult-chiari-malformation-and-basilar-invagination-a-systematic-review-and-meta-analysis
#19
Ulysses de Oliveira Sousa, Matheus Fernandes de Oliveira, Lindolfo Carlos Heringer, Alécio Cristino Evangelista Santos Barcelos, Ricardo Vieira Botelho
Chiari malformation (CM) and basilar invagination (BI) are mesodermal malformations with disproportion between the content and volume of posterior fossa capacity and overcrowding of neural structures at the level of foramen magnum. Several alternatives for posterior approaches are available, including extradural (ED), extra-arachnoidal, and intradural (ID) approaches. The objectives are to evaluate the effect of several surgical techniques for posterior fossa decompression (PFD) in the outcomes of patients with CCJM and to evaluate complications in the techniques reported...
May 2, 2017: Neurosurgical Review
https://www.readbyqxmd.com/read/28459191/extradural-cystic-lesion
#20
Jeffery Dolbeer, Michael Crowell, Donald Goss
A 21-year-old male military academy cadet was evaluated in a physical therapy clinic for worsening lower back pain 2 months after picking up a dumbbell. Following examination and follow-up, the therapist ordered radiographs and referred the patient to primary care due to worsening symptoms. Magnetic resonance imaging ordered by the physician revealed an extradural cystic lesion. J Orthop Sports Phys Ther 2017;47(5):368. doi:10.2519/jospt.2017.6584.
May 2017: Journal of Orthopaedic and Sports Physical Therapy
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