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https://www.readbyqxmd.com/read/28922886/intracranial-bypass-of-posterior-inferior-cerebellar-artery-aneurysms-indications-technical-aspects-and-clinical-outcomes
#1
David J Bonda, Mohamad Labib, Jeffrey M Katz, Rafael A Ortiz, David Chalif, Avi Setton, David J Langer, Amir R Dehdashti
BACKGROUND: For some posterior inferior cerebellar artery (PICA) aneurysms, there is no constructive endovascular or direct surgical clipping option. Intracranial bypass is an alternative to a deconstructive technique. OBJECTIVE: To evaluate the clinical features, surgical techniques, and outcome of PICA aneurysms treated with bypass and obliteration of the diseased segment. METHODS: Retrospective review of PICA aneurysms treated via intracranial bypass was performed...
October 1, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28922877/use-of-a-polytetrafluoroethylene-coated-vascular-plug-for-focal-intracranial-parent-vessel-sacrifice-for-fusiform-aneurysm-treatment
#2
Andrew P Carlson, Mohammad Abbas, Patricia Hall, Christopher Taylor
BACKGROUND: Fusiform intracranial aneurysms are challenging due to the circumferential nature of the disease. Endovascular parent vessel sacrifice with coils may be a treatment option, but typically requires a long vessel segment to induce complete cessation of flow. OBJECTIVE:   We evaluate early clinical experience with the intracranial use of the microvascular plug (MVP; Medtronic, Dublin, Ireland) device and to compare to previous coil-only techniques for vertebral artery sacrifice for fusiform vertebral aneurysm...
October 1, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28922850/comparative-ultrastructural-and-stereological-analyses-of-unruptured-and-ruptured-saccular-intracranial-aneurysms
#3
Emine Korkmaz, Rachel Kleinloog, Bon H Verweij, Iris E Allijn, Liesbeth H P Hekking, Luca Regli, Gabriel J E Rinkel, Ynte M Ruigrok, Jan Andries Post
Insight into processes leading to rupture of intracranial aneurysms (IAs) may identify biomarkers for rupture or lead to management strategies reducing the risk of rupture. We characterized and quantified (ultra)structural differences between unruptured and ruptured aneurysmal walls. Six unruptured and 6 ruptured IA fundi were resected after microsurgical clipping and analyzed by correlative light microscopy for quantitative analysis (proportion of the vessel wall area) and transmission electron microscopy for qualitative ultrastructural analysis...
October 1, 2017: Journal of Neuropathology and Experimental Neurology
https://www.readbyqxmd.com/read/28920537/magnetic-resonance-imaging-and-brain-injury-in-the-chronic-phase-after-aneurysmal-subarachnoid-hemorrhage-a-systematic-review
#4
Bertine L Stehouwer, Lisa A van der Kleij, Jeroen Hendrikse, Gabriel Je Rinkel, Jill B De Vis
Background Case-fatality rates after aneurysmal subarachnoid hemorrhage have decreased over the past decades. However, many patients who survive an aneurysmal subarachnoid hemorrhage have long-term functional and cognitive impairments. Aims We sought to review all data on conventional brain MRI obtained in the chronic phase after aneurysmal subarachnoid hemorrhage to (1) analyze the proportion of patients with cerebral infarction or brain volume changes; (2) investigate baseline determinants predictive of MRI-detected damage; and (3) assess if brain damage is predictive of patient outcome...
January 1, 2017: International Journal of Stroke: Official Journal of the International Stroke Society
https://www.readbyqxmd.com/read/28919570/initial-clinical-experience-with-aview-a-clinical-computational-platform-for-intracranial-aneurysm-morphology-hemodynamics-and-treatment-management
#5
Jianping Xiang, Nicole Varble, Jason M Davies, Ansaar T Rai, Kenichi Kono, Shin-Ichiro Sugiyama, Mandy J Binning, Rabih G Tawk, Hoon Choi, Andrew J Ringer, Kenneth V Snyder, Elad I Levy, L Nelson Hopkins, Adnan H Siddiqui, Hui Meng
BACKGROUND: Intracranial aneurysm (IA) management is challenging. Clinicians often rely on varied and intuitively disparate ways of evaluating rupture risk that may only partially take into account complex hemodynamic and morphologic factors. We developed a prototype of a clinically-oriented, streamlined, computational platform, AView, for rapid assessment of hemodynamics and morphometrics in clinical settings. To show the potential clinical utility of AView, we report our initial multicenter experience highlighting the possible advantages of morphologic and hemodynamic analysis of IAs...
September 14, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28919562/operative-management-of-distal-anterior-cerebral-artery-aneurysms-through-a-mini-anterior-interhemispheric-approach
#6
Alejandro Monroy, Edgar Nathal, Albert L Rhoton
BACKGROUND: Distal anterior cerebral artery (DACA) aneurysms, also referred to as pericallosal artery aneurysms, are present in 1.5 to 9% of all intracranial aneurysms. This study aims to describe the importance of the microsurgical anatomy of the DACA and demonstrate the surgical nuances for handling DACA aneurysms, with a minimally invasive surgical technique METHODS: We retrospectively and descriptively analyzed a series of aneurysm cases performed at the National Institute of Neurology and Neurosurgery-Mexico City...
September 14, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28919227/asymptomatic-ischemic-risks-in-microsurgical-clipping-for-unruptured-intracranial-aneurysms-in-anterior-circulation
#7
Katsuhiro Shinagawa, Toshinori Matsushige, Takahito Okazaki, Daizo Ishii, Nobuhiko Ichinose, Shigeyuki Sakamoto, Kaoru Kurisu
BACKGROUND: The ischemic risk in prophylactic treatments of unruptured intracranial aneurysms (UIAs) is a serious health concern. OBJECTIVE: The aim of this study was to elucidate the incidence and characteristics of ischemic events in microsurgical clipping (MC) of anterior circulation UIAs. METHODS: Ischemic events were prospectively evaluated before and after surgery between April 2011 and March 2017. The location, volume, minimum value of apparent diffusion coefficient (ADCMIN) in high-intensity spots (HIS) on 3T MR Diffusion-weighted imaging (DWI), and radiographic outcomes were analyzed...
September 12, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28918386/evaluation-of-previously-embolized-intracranial-aneurysms-inter-and-intra-rater-reliability-among-neurosurgeons-and-interventional-neuroradiologists
#8
Scott L Zuckerman, Nikita Lakomkin, Jordan A Magarik, Jan Vargas, Marcus Stephens, Babatunde Akinpelu, Alejandro M Spiotta, Azam Ahmed, Adam S Arthur, David Fiorella, Ricardo Hanel, Joshua A Hirsch, Ferdinand K Hui, Robert F James, David F Kallmes, Philip M Meyers, David B Niemann, Peter Rasmussen, Raymond D Turner, Babu G Welch, J Mocco
BACKGROUND: The angiographic evaluation of previously coiled aneurysms can be difficult yet remains critical for determining re-treatment. OBJECTIVE: The main objective of this study was to determine the inter-rater reliability for both the Raymond Scale and per cent embolization among a group of neurointerventionalists evaluating previously embolized aneurysms. METHODS: A panel of 15 neurointerventionalists examined 92 distinct cases of immediate post-coil embolization and 1 year post-embolization angiographs...
September 16, 2017: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/28918385/wall-enhancement-ratio-and-partial-wall-enhancement-on-mri-associated-with-the-rupture-of-intracranial-aneurysms
#9
Guang-Xian Wang, Li Wen, Sheng Lei, Qian Ran, Jin-Bo Yin, Zi-Li Gong, Dong Zhang
OBJECTIVES: To evaluate the risk factors for rupture of intracranial aneurysms (IAs) using high resolution MRI (HRMRI). METHODS: 91 consecutive patients with 106 IAs were reviewed from February 2016 to April 2017. Patients and IAs were divided into ruptured and unruptured groups. In addition to the clinical characteristics of the patients, the features of IAs (eg, shape) were evaluated by CT angiography, whereas wall thickness, enhanced patterns, and enhancement ratio (ER) were evaluated by MRI...
September 16, 2017: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/28913704/impact-of-etiology-age-and-gender-on-onset-and-severity-of-hyponatremia-in-patients-with-hypopituitarism-retrospective-analysis-in-a-specialised-endocrine-unit
#10
Dragana Miljic, Mirjana Doknic, Marko Stojanovic, Marina Nikolic-Djurovic, Milan Petakov, Vera Popovic, Sandra Pekic
BACKGROUND: Hyponatremia can unmask hypopituitarism and secondary adrenal insufficiency. This is important, since the need to screen for steroid deficiency, in patients with hyponatremia is often neglected. PATIENTS AND METHODS: In a retrospective study, twenty-five patients (13f/12m, age 58.9 ± 18.6 years) with hyponatremia (119.7 ± 10.5 mmol/L) were identified among 260 in-patients treated for hypopituitarism in our specialized endocrine unit, over the last decade...
September 14, 2017: Endocrine
https://www.readbyqxmd.com/read/28912285/predictors-of-incomplete-occlusion-following-pipeline-embolization-of-intracranial-aneurysms-is-it-less-effective-in-older-patients
#11
N Adeeb, J M Moore, M Wirtz, C J Griessenauer, P M Foreman, H Shallwani, R Gupta, A A Dmytriw, R Motiei-Langroudi, A Alturki, M R Harrigan, A H Siddiqui, E I Levy, A J Thomas, C S Ogilvy
BACKGROUND AND PURPOSE: Flow diversion with the Pipeline Embolization Device (PED) for the treatment of intracranial aneurysms is associated with a high rate of aneurysm occlusion. However, clinical and radiographic predictors of incomplete aneurysm occlusion are poorly defined. In this study, predictors of incomplete occlusion at last angiographic follow-up after PED treatment were assessed. MATERIALS AND METHODS: A retrospective analysis of consecutive aneurysms treated with the PED between 2009 and 2016, at 3 academic institutions in the United States, was performed...
September 14, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28912279/differences-in-morphologic-and-hemodynamic-characteristics-for-phases-based-intracranial-aneurysm-locations
#12
N Varble, H Rajabzadeh-Oghaz, J Wang, A Siddiqui, H Meng, A Mowla
BACKGROUND AND PURPOSE: Several recent prospective studies have found that unruptured intracranial aneurysms at various anatomic locations have different propensities for future rupture. This study aims to uncover the lack of understanding regarding rupture-prone characteristics, such as morphology and hemodynamic factors, associated with different intracranial aneurysm location. MATERIALS AND METHODS: We investigated the characteristics of 311 unruptured aneurysms at our center...
September 14, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28906352/clinical-and-angiographic-outcomes-following-endovascular-treatment-of-very-small-3%C3%A2-mm-or-smaller-intracranial-aneurysm-a-single-center-experience
#13
Yongsheng Liu, Feng Wang, Xiaochen Fu, Yongjian Liu, Guodong Zhang, Ke Xu
Treatments for very small (3 mm or smaller) intracranial aneurysms (VSAs) remain controversial. The aim of this study was to evaluate the efficacy of endovascular treatment for VSAs and to evaluate clinical risk factors associated with complications.This retrospective study enrolled 82 VSA patients who underwent coil embolization in our institution. Angiographic outcomes were assessed according to the Meyers classification. The clinical results were evaluated using the modified Rankin scale (mRS) immediately after coiling, at discharge, and during follow-up...
September 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28905137/the-quality-assessment-of-clinical-practice-guidelines-for-intracranial-aneurysms-a-systematic-appraisal
#14
Qiao Li, Yingchun Yang, Yawen Pan, Lei Duan, Hu Yang
Intracranial aneurysms are common in adults. The relevant guidelines for patients with intracranial aneurysms aim to standardize the clinical practice and decision making for these patients. However, their management is controversial, and the quality of the guidelines has not been assessed. We aim to evaluate the quality of the guidelines for intracranial aneurysms as well as to compare and analyze the recommendations between different guidelines. Systematic searches were conducted to identify the guidelines for intracranial aneurysms from general electronic and guideline databases...
September 13, 2017: Neurosurgical Review
https://www.readbyqxmd.com/read/28904829/cavernous-angioma-presenting-with-subarachnoid-hemorrhage-which-was-diffusely-distributed-in-the-basal-cisterns-and-mimicked-intracranial-aneurysm-rupture
#15
Atsuhito Uneda, Satoru Yabuno, Takahiro Kanda, Kenta Suzuki, Koji Hirashita, Masatoshi Yunoki, Kimihiro Yoshino
No abstract text is available yet for this article.
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/28904825/angiographic-and-epidemiological-characteristics-associated-with-aneurysm-remnants-after-microsurgical-clipping
#16
Marcos Dellaretti, Warley Carvalho da Silva Martins, Jules Carlos Dourado, Wilson Faglioni, Ricardo Souza Quadros, Vítor Vieira de Souza Moraes, Carlos Batista Alves de Souza Filho
BACKGROUND: Despite new techniques for the treatment of cerebral aneurysms, the percentage of aneurysm remnants after surgical intervention seems to be relatively constant. The objective of this study was to assess angiographic and epidemiological features associated with aneurysm remnants after microsurgical clipping. METHODS: This study was conducted from February 2009 to August 2012 on a series of 90 patients with 105 aneurysms referred to the Santa Casa of Belo Horizonte who were surgically treated and angiographically controlled...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/28904824/a-case-of-unruptured-aneurysm-of-the-internal-carotid-artery-presenting-as-olfactory-hallucinations
#17
Jiro Akimoto, Norio Ichimasu, Rei Haraoka, Shinjiro Fukami, Michihiro Kohno
BACKGROUND: Olfactory hallucination, a symptom of medial temporal lobe epilepsy, is rarely associated with unruptured intracranial aneurysms. CASE DESCRIPTION: We encountered this situation in a 70-year-old woman with an unruptured aneurysm at the bifurcation of the internal carotid and posterior communicating artery. We were able to achieve epileptic control by craniotomy clipping and medial temporal lesionectomy. CONCLUSION: According to our knowledge, previous reports are limited to cases of large middle cerebral artery aneurysms compressing the lateral orbitofrontal cortex, and this is apparently the first report of a case where olfactory hallucinations occurred from direct stimulation of the entorhinal cortex by an internal carotid and posterior communicating artery bifurcation aneurysm...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/28904583/giant-unruptured-middle-cerebral-artery-aneurysm-presenting-with-complex-partial-seizure-a-short-review
#18
Guru Dutta Satyarthee, Manmohan Singh
Intracranial aneurysm is a rare cause of seizure although few cases may develop new onset seizure following rupture of aneurysm. The causes of seizure in ruptured aneurysm may be caused due to presence of subarachnoid hemorrhage, intracerebral hematoma, infarct due to progressive vasospasm, worsening of hydrocephalus, or even after surgical craniotomy for clipping of aneurysm. However, incidental aneurysm solely presenting with complex partial seizure is not reported in literature. To the best of knowledge of authors, current case represents the first case as incidental aneurysm presenting with seizure and pertinent literature is briefly reviewed...
April 2017: Journal of Pediatric Neurosciences
https://www.readbyqxmd.com/read/28902339/terson-syndrome-associated-with-acute-macular-neuropathy-type-2
#19
Stela Vujosevic, Ilaria Testi, Elisabetta Nacci, Edoardo Midena
Terson syndrome is defined as the incidence of intraocular hemorrhage in patients following a subarachnoid or intracranial bleed. A 38-year-old female with both intraretinal and subretinal hemorrhages secondary to Terson syndrome underwent repair of a ruptured cerebral aneurysm. One month following resolution of the macular hemorrhages, a paracentral scotoma persisted. Multimodal imaging (morphological and functional) confirmed the presence of acute macular neuroretinopathy Type 2 associated with deep retinal capillary ischemia...
September 1, 2017: Ophthalmic Surgery, Lasers & Imaging Retina
https://www.readbyqxmd.com/read/28899830/simple-lateral-suboccipital-approach-and-modification-for-vertebral-artery-aneurysms-a-study-of-52-cases-over-10-years
#20
Mardjono Tjahjadi, Behnam Rezai-Jahromi, Joseph Serrone, Ville Nurminen, Joham Choque-Velasquez, Riku Kivisaari, Hanna Lehto, Mika Niemelä, Juha Hernesniemi
INTRODUCTION: Complex skull base approaches are frequently used to treat intracranial vertebral artery (VA) and proximal posterior inferior cerebellar artery (PICA) aneurysms. These complex procedures are associated with higher risk of neurovascular injury. Hence, a less invasive surgical approach is needed to improve treatment's efficacy and safety. MATERIAL AND METHODS: A retrospective analysis was conducted on clinical and radiological data from surgeries where simple lateral suboccipital and "lateral enough" approaches were used to clip VA aneurysms in the Department of Neurosurgery at Helsinki University Central Hospital from 2000 - 2009...
September 9, 2017: World Neurosurgery
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