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unruptured internal aneurysms

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https://www.readbyqxmd.com/read/28523215/migraine-prevalence-in-patients-with-unruptured-intracranial-aneurysms-a-case-control-study
#1
Elbert H Witvoet, Nadine Pelzer, Gisela M Terwindt, Gabriël J E Rinkel, Monique H M Vlak, Ale Algra, Marieke J H Wermer
OBJECTIVES: Migraine is a suggested risk factor for aneurysmal subarachnoid hemorrhage (aSAH). An increased risk of aSAH in migraineurs may be explained by an increased prevalence of unruptured intracranial aneurysms (UIA). We performed a case-control study to compare lifetime migraine prevalence in patients with UIA, patients with a history of transient ischemic attact (TIA) or ischemic stroke and controls without a history of aSAH, TIA or ischemic stroke. MATERIALS AND METHODS: Patients with UIA were recruited from two university hospitals...
May 2017: Brain and Behavior
https://www.readbyqxmd.com/read/28490685/-ruptured-c2-aneurysm-of-the-internal-carotid-artery-with-ipsilateral-unruptured-giant-internal-carotid-artery-aneurysm-a-case-report
#2
Saya Ozaki, Hideo Tanaka, Shinya Fukumoto, Haruhisa Ichikawa, Shinji Onoue, Noriyuki Fumoto, Hajime Miyazaki, Kanehisa Kohno
A giant intracranial internal carotid artery(ICA)aneurysm is difficult to treat. We encountered a case with an unruptured giant intracranial ICA aneurysm with a ruptured C2 aneurysm of the ipsilateral ICA. In this case report, we describe how the treatment and review the literature. A 59-year-old man presented with sudden-onset headache and vomiting. He was diagnosed at a local neurosurgical unit as having a subarachnoid hemorrhage and admitted to our hospital. Cerebral angiogram revealed an unruptured giant ICA C3-4 aneurysm with a ruptured aneurysm of the ipsilateral ICA C2...
May 2017: No Shinkei Geka. Neurological Surgery
https://www.readbyqxmd.com/read/28458385/recent-trends-in-neuro-endovascular-treatment-for-acute-ischemic-stroke-cerebral-aneurysms-carotid-stenosis-and-brain-arteriovenous-malformations
#3
Yuji Matsumaru, Eiichi Ishikawa, Tetsuya Yamamoto, Akira Matsumura
The efficacy of mechanical thrombectomy with stent retrievers for emergent large vessel occlusion has been proved by randomized trials. Mechanical thrombectomy is increasingly being adopted in Japan since stent retrievers were first approved in 2014. An urgent clinical task is to offer structured systems of care to provide this treatment in a timely fashion to all patients with emergent large vessel occlusion. Treatment with flow-diverting stents is currently a preferred treatment option worldwide for large and giant unruptured aneurysms...
May 1, 2017: Neurologia Medico-chirurgica
https://www.readbyqxmd.com/read/28448420/inflow-angle-of-small-paraophthalmic-aneurysms-is-a-determinant-of-adjacent-sphenoid-bone-remodeling
#4
Gianni Giancaspro, Thierry Gagné, Donatella Tampieri, Maria DelPilar Cortes
OBJECTIVE: Large internal carotid artery aneurysms can cause remodeling of the sphenoid bone with subsequent hemorrhage into the sinus. No reports have demonstrated small unruptured lesions causing similar bone remodeling. The purpose of this study was to demonstrate our experience with small unruptured paraophthalmic aneurysms causing sphenoid bone remodeling, specifically when the optimal aneurysm inflow angle is present. METHODS: We searched our database for computed tomography angiography studies of small paraophthalmic aneurysms and assessed adjacent sphenoid bone remodeling and inflow angle...
April 26, 2017: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/28443483/aneurysm-size-and-the-windkessel-effect-an-analysis-of-contrast-intensity-in-digital-subtraction-angiography
#5
Ahmed E Hussein, Darian R Esfahani, Andreas Linninger, Fady T Charbel, Chih-Yang Hsu, Fady T Charbel, Ali Alaraj
Large cerebral aneurysms are considered more dangerous than their smaller counterparts, with higher risk of subarachnoid hemorrhage. Understanding the hemodynamics of large aneurysms has potential to predict their response to treatment. Digital subtraction angiography images for patients with intracranial aneurysms over a seven-year period were reviewed. Unruptured solitary aneurysms of the internal carotid artery (ICA) proximal to the terminus and posterior communicating artery were included. Contrast intensity over time was analyzed at the center of the M1 segment of the middle cerebral artery distal to the aneurysm and compared to the contralateral side...
January 1, 2017: Interventional Neuroradiology
https://www.readbyqxmd.com/read/28439656/-management-of-paraophthalmic-aneurysms-review-of-endovascular-treatment-strategies
#6
P Bhogal, M Aguilar Pérez, G Sauder, H Bäzner, O Ganslandt, H Henkes
BACKGROUND: Aneurysms of the cerebral vessels are relatively common and aneurysms of the ophthalmic segment of the internal carotid artery (ICA) represent approximately 10% of intradural aneurysms. ANATOMICAL ASPECTS: The ophthalmic segment of the ICA extends from the origin of the ophthalmic artery to the origin of the posterior communicating artery. Aneurysms can originate from the ophthalmic artery itself or directly from the ICA at a distance from the ophthalmic artery...
April 24, 2017: Der Ophthalmologe: Zeitschrift der Deutschen Ophthalmologischen Gesellschaft
https://www.readbyqxmd.com/read/28438653/the-fate-of-side-branches-covered-by-flow-diverters-results-from-140-patients
#7
P Bhogal, O Ganslandt, H Bäzner, H Henkes, M Aguilar Perez
BACKGROUND: Flow diverter stents (FDS) are a recognised treatment option for intracranial aneurysms. There remain on-going concerns regarding the safety of FDS especially when it comes to the fate of covered side branches. We sought to report on the patency of side branches covered by FDS. METHODS: We retrospectively reviewed our database of prospectively collected information for all patients treated with FDS for an unruptured saccular aneurysm of the clinoid, ophthalmic, and terminating segments of the internal carotid artery between September 2009 and July 2016...
April 21, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28431024/radiosurgery-for-unruptured-brain-arteriovenous-malformations-an-international-multicenter-retrospective-cohort-study
#8
Dale Ding, Robert M Starke, Hideyuki Kano, John Y K Lee, David Mathieu, John Pierce, Paul Huang, Symeon Missios, Caleb Feliciano, Rafael Rodriguez-Mercado, Luis Almodovar, Inga S Grills, Danilo Silva, Mahmoud Abbassy, Douglas Kondziolka, Gene H Barnett, L Dade Lunsford, Jason P Sheehan
BACKGROUND: The role of intervention in the management of unruptured brain arteriovenous malformations (AVM) is controversial. OBJECTIVE: To analyze in a multicenter, retrospective cohort study, the outcomes following radiosurgery for unruptured AVMs and determine predictive factors. METHODS: We evaluated and pooled AVM radiosurgery data from 8 institutions participating in the International Gamma Knife Research Foundation. Patients with unruptured AVMs and ≥12 mo of follow-up were included in the study cohort...
June 1, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28377249/trends-in-resident-operative-teaching-opportunities-for-treatment-of-intracranial-aneurysms
#9
Matthew Piazza, Nikhil Nayak, Zarina Ali, Gregory Heuer, Matthew Sanborn, Sherman Stein, James Schuster, M Sean Grady, Neil R Malhotra
OBJECTIVE: The International Subarachnoid Aneurysm Trial heralded a paradigm shift in the treatment of intracranial aneurysms. During this same time frame neurosurgical training programs increased in size and scope. The present study examines the impact of trends in surgical clipping and the endovascular treatment of intracranial aneurysms, over one decade, and the neurosurgical resident complement on the resident teaching environment using the Nationwide Inpatient Sample (NIS). METHODS: The NIS was used to estimate the number of aneurysms treated with either surgical clipping and endovascular methods from 2002 through 2011 at teaching institutions...
April 1, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28304199/jailed-double-microcatheter-technique-following-horizontal-stenting-for-coil-embolization-of-intracranial-wide-necked-bifurcation-aneurysms-a-technical-report-of-two-cases
#10
Takahiro Kitahara, Taketo Hatano, Makoto Hayase, Etsuko Hattori, Akinori Miyakoshi, Takehiko Nakamura
The horizontal stenting technique facilitates endovascular treatment of wide-necked bifurcation intracranial aneurysms. Previous literature shows, however, that subsequent coil embolization at initial treatment results in incomplete obliteration in many cases. The authors present two consecutive cases of wide-necked large bifurcation aneurysms to describe an additional coil embolization technique following horizontal stenting. The patients were a 53-year-old female with an unruptured internal carotid artery terminus aneurysm and a 57-year-old female with a recurrent basilar artery tip aneurysm...
April 2017: Interventional Neuroradiology
https://www.readbyqxmd.com/read/28236049/analysis-of-the-venous-channel-within-the-clivus-using-multidetector-computed-tomography-digital-subtraction-venography
#11
Katsuhiro Mizutani, Masahiro Toda, Jun Kurasawa, Takenori Akiyama, Hirokazu Fujiwara, Masahiro Jinzaki, Kazunari Yoshida
PURPOSE: Although neuroradiologists and skull base neurosurgeons are aware of the existence of veins within the clivus, such vessels have seldom been described in the literature. The aim of the present study is to elucidate the detailed venous structure of the clivus. METHODS: Computed tomography digital subtraction venography (CT-DSV) images of 50 unruptured aneurysm cases were examined retrospectively. RESULTS: Eighteen emissary veins were identified in 14 (28...
February 24, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28235953/nickel-associated-delayed-multiple-white-matter-lesions-after-stent-assisted-coil-embolization-of-intracranial-unruptured-aneurysm
#12
Hun Soo Park, Ichiro Nakagawa, Shohei Yokoyama, Daisuke Wajima, Takeshi Wada, Yasushi Motoyama, Kimihiko Kichikawa, Hiroyuki Nakase
Metal-induced encephalopathy after stent-assisted coil embolization is extremely rare. The present report describes two patients who presented with symptomatic intracranial parenchymal edematous lesions after stent-assisted coil embolization. A 64-year-old woman underwent stent-assisted coil embolization for a left internal carotid artery aneurysm; 21 days after the procedure she presented with right hand weakness and MRI revealed multifocal white matter lesions. Another woman aged 52 years underwent stent-assisted coil embolization for right vertebral artery aneurysm; 18 days after the procedure she presented with left-sided sensory disturbance and MRI demonstrated multiple white matter lesions...
February 24, 2017: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/28219914/nickel-associated-delayed-multiple-white-matter-lesions-after-stent-assisted-coil-embolization-of-intracranial-unruptured-aneurysm
#13
Hun Soo Park, Ichiro Nakagawa, Shohei Yokoyama, Daisuke Wajima, Takeshi Wada, Yasushi Motoyama, Kimihiko Kichikawa, Hiroyuki Nakase
Metal-induced encephalopathy after stent-assisted coil embolization is extremely rare. The present report describes two patients who presented with symptomatic intracranial parenchymal edematous lesions after stent-assisted coil embolization. A 64-year-old woman underwent stent-assisted coil embolization for a left internal carotid artery aneurysm; 21 days after the procedure she presented with right hand weakness and MRI revealed multifocal white matter lesions. Another woman aged 52 years underwent stent-assisted coil embolization for right vertebral artery aneurysm; 18 days after the procedure she presented with left-sided sensory disturbance and MRI demonstrated multiple white matter lesions...
February 20, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28216398/engaging-in-a-keyhole-concept-for-the-management-of-ruptured-and-unruptured-aneurysms
#14
Daniel D Cavalcanti, Roberto C de Paula, Paula L Alvarenga, Paulo José P da Mata, Paulo Niemeyer Filho
OBJECTIVE: Many new endovascular devices have been used under the guidance of the International Subarachnoid Aneurysm Trial (ISAT). Clipping still offers higher occlusion rates, and its technique continues to evolve, resulting in smaller exposures and reduced manipulation to brain tissue. We sought to evaluate the routine use of the minisphenoidal approach to manage intracranial aneurysms in a high-volume institution. METHODS: We retrospectively reviewed our database of aneurysm patients from October 2013 to May 2016...
February 16, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28209576/differences-in-hemodynamics-and-rupture-rate-of-aneurysms-at-the-bifurcation-of-the-basilar-and-internal-carotid-arteries
#15
R Doddasomayajula, B Chung, F Hamzei-Sichani, C M Putman, J R Cebral
BACKGROUND AND PURPOSE: Cerebral aneurysms in the posterior circulation are known to have a higher rupture risk than those in the anterior circulation. We sought to test the hypothesis that differences in hemodynamics can explain the difference in rupture rates. MATERIALS AND METHODS: A total of 117 aneurysms, 63 at the tip of the basilar artery (27 ruptured, 36 unruptured, rupture rate = 43%) and 54 at the bifurcation of the internal carotid artery (11 ruptured, 43 unruptured, rupture rate = 20%) were analyzed with image-based computational fluid dynamics...
February 16, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28184003/a-survey-of-intracranial-aneurysm-treatment-practices-among-united-states-physicians
#16
Kyle M Fargen, Hector E Soriano-Baron, Julia T Rushing, William Mack, J Mocco, Felipe Albuquerque, Andrew F Ducruet, Maxim Mokin, Italo Linfante, Stacey Q Wolfe, John A Wilson, Joshua A Hirsch
BACKGROUND: Recent surveys have failed to examine cerebrovascular aneurysm treatment practices among US physicians. OBJECTIVE: To survey physicians who are actively involved in the care of patients with cerebrovascular aneurysms to determine current aneurysm treatment preferences. METHODS: A 25-question SurveyMonkey online survey was designed and distributed electronically to members of the Society of NeuroInterventional Surgery, Society of Vascular and Interventional Neurology, and the American Association of Neurological Surgeons/Congress of Neurological Surgeons Combined Cerebrovascular Section...
February 9, 2017: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/28006728/is-clipping-better-than-coiling-in-the-treatment-of-patients-with-oculomotor-nerve-palsies-induced-by-posterior-communicating-artery-aneurysms-a-systematic-review-and-meta-analysis
#17
REVIEW
Feng Zheng, Ying Dong, Peng Xia, Anastasios Mpotsaris, Pantelis Stavrinou, Gerrit Brinker, Roland Goldbrunner, Boris Krischek
OBJECTIVE: Posterior communicating artery aneurysms (PcomAAs) are the second most common aneurysm, accounting for 25% of all aneurysms and 50% of internal carotid artery aneurysms. It has been estimated that oculomotor nerve palsy (ONP) occurs in up to one-third of patients with posterior communicating artery (PcomA) aneurysms. Recent research showed a better outcome of ONP in patients with PcomAA after surgical clipping when compared to endovascular coiling. We compared the effect of clipping and coiling on recovery of ONP in the management of patients with PcomAAs...
February 2017: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/27991669/characteristics-of-headache-after-an-intracranial-endovascular-procedure-a-prospective-observational-study
#18
COMPARATIVE STUDY
Linjing Zhang, Xiancong Wu, Hai Di, Tao Feng, Yunxia Wang, Jun Wang, Xiangyu Cao, Baomin Li, Ruozhuo Liu, Shengyuan Yu
BACKGROUND: Two editions of the International Classification of Headache Disorders (ICHD) diagnostic criteria for "Headache attributed to an intracranial endovascular procedure" have been published, in 2004 and 2013.(1,2) Despite studies that have suggested that the former is not very practical, the ICHD-3 beta did not contain major changes. Moreover, so far no consensus exists regarding characteristics of headache after intracranial endovascular procedure. Thus, there is a need for sound suggestions to improve the ICHD-3 beta diagnostic criteria...
March 2017: Headache
https://www.readbyqxmd.com/read/27956171/endovascular-parent-artery-occlusion-of-large-or-giant-unruptured-internal-carotid-artery-aneurysms-a-long-term-single-center-experience
#19
Kampei Shimizu, Hirotoshi Imamura, Yohei Mineharu, Hidemitsu Adachi, Chiaki Sakai, Shoichi Tani, Koichi Arimura, Mikiya Beppu, Nobuyuki Sakai
The development of stent-like devices has increased treatment options for complex internal carotid artery (ICA) aneurysms, but the optimal treatment remains unclear. The purpose of this study was to evaluate the safety and efficacy of endovascular parent-artery occlusion (PAO) for ICA aneurysms. We retrospectively reviewed 28 patients with unruptured ICA aneurysms ⩾10mm treated with PAO between April 2002 and March 2015 at our institution. Patients who developed neurologic symptoms or with venous-phase delay >2s during balloon test occlusion were not treated by PAO...
March 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/27904445/endovascular-treatment-of-unruptured-aneurysms-of-cavernous-and-ophthalmic-segment-of-internal-carotid-artery-with-flow-diverter-device-pipeline
#20
Marko Jevsek, Charbel Mounayer, Tomaz Seruga
BACKGROUND: Intra-arterial treatment of aneurysms by redirecting blood flow is a newer method. The redirection is based on a significantly more densely braided wire stent. The stent wall keeps the blood in the lumen of the stent and slows down the turbulent flow in the aneurysms. Stagnation of blood in the aneurysm sac leads to the formation of thrombus and subsequent exclusion of the aneurysm from the circulation. The aim of the study was to evaluate flow diverter device Pipeline for broad neck and giant aneurysm treatment...
December 1, 2016: Radiology and Oncology
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