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unruptured aneurysm

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https://www.readbyqxmd.com/read/28927208/observation-of-neointimal-coverage-around-the-aneurysm-neck-after-stent-assisted-coil-embolization-by-optical-frequency-domain-imaging-technical-case-report
#1
Rie Yako, Hiroyuki Matsumoto, Osamu Masuo, Naoyuki Nakao
BACKGROUND AND IMPORTANCE: Stent-assisted coil embolization has been established as a treatment option for wide-necked or complex aneurysms. However, concerns have been raised about the incidence of thromboembolic complications, which is higher for coil embolization without stent assistance. Long-term antiplatelet therapy is necessary to prevent acute or delayed ischemic events potentially associated with incomplete stent apposition after treatment with stent-assisted coil embolization...
April 1, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28922886/intracranial-bypass-of-posterior-inferior-cerebellar-artery-aneurysms-indications-technical-aspects-and-clinical-outcomes
#2
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/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/28919227/asymptomatic-ischemic-risks-in-microsurgical-clipping-for-unruptured-intracranial-aneurysms-in-anterior-circulation
#4
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/28918385/wall-enhancement-ratio-and-partial-wall-enhancement-on-mri-associated-with-the-rupture-of-intracranial-aneurysms
#5
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/28912279/differences-in-morphologic-and-hemodynamic-characteristics-for-phases-based-intracranial-aneurysm-locations
#6
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/28904827/horizontal-distance-of-anterior-communicating-artery-aneurysm-neck-from-anterior-clinoid-process-is-critically-important-to-predict-postoperative-complication-in-clipping-via-pterional-approach
#7
Takashi Fujii, Naoki Otani, Satoru Takeuchi, Terushige Toyooka, Kojiro Wada, Kentaro Mori
BACKGROUND: The difficulty of clipping aneurysm of the anterior communicating artery (AcomA) depends on the size, direction, positional relationship with the parent artery, and height from the anterior frontal base. Cases of clipping unruptured AcomA aneurysm through pterional approach were analyzed to investigate the importance of the horizontal distance from the base of the anterior clinoid process. METHODS: Twenty-six consecutive unruptured AcomA aneurysms were treated by clipping through pterional approach in 10 males and 11 females aged 37-77 years (mean 61...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/28904824/a-case-of-unruptured-aneurysm-of-the-internal-carotid-artery-presenting-as-olfactory-hallucinations
#8
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
#9
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/28899830/simple-lateral-suboccipital-approach-and-modification-for-vertebral-artery-aneurysms-a-study-of-52-cases-over-10-years
#10
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
https://www.readbyqxmd.com/read/28894035/editorialist-response-a-model-for-predicting-the-growth-of-unruptured-intracranial-aneurysms-beyond-fortune-telling
#11
Dale Ding
No abstract text is available yet for this article.
September 12, 2017: Neurology
https://www.readbyqxmd.com/read/28894034/letter-re-a-model-for-predicting-the-growth-of-unruptured-intracranial-aneurysms-beyond-fortune-telling
#12
Sunil Munakomi
No abstract text is available yet for this article.
September 12, 2017: Neurology
https://www.readbyqxmd.com/read/28887278/comparison-of-unilateral-and-bilateral-craniotomy-for-the-treatment-of-bilateral-middle-cerebral-artery-aneurysms-anatomical-and-clinical-parameters-and-surgical-outcomes
#13
Min Jai Cho, Chang Wan Oh, O-Ki Kwon, Hyoung Soo Byoun, Si Un Lee, T Kim, Seung Pil Ban, Jae Seung Bang
OBJECTIVE: To compare two craniotomy approaches (unilateral and bilateral) in terms of anatomical and clinical parameters and surgical outcomes. METHODS: From January 2011 to December 2014, 19 patients with bilateral unruptured middle cerebral artery (MCA) aneurysms were treated with unilateral craniotomy (group 1) and 10 patients were treated with bilateral mini-craniotomy (group 2). We compared demographic data, characteristics of aneurysms, radiological and clinical parameters, postoperative complications, and surgical outcomes between the groups...
September 5, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28887082/clinical-outcomes-after-craniotomy-for-unruptured-intracranial-aneurysm-in-patients-with-coronary-artery-disease
#14
Akira Nakamizo, Toshiyuki Amano, Satoshi Matsuo, Yuhei Michiwaki, Yutaka Fujioka, Yousuke Kawano
BACKGROUND: Coronary artery disease (CAD) patients receiving antiplatelet agents occasionally undergo craniotomy. We aimed to clarify clinical outcomes after craniotomy for unruptured intracranial aneurysm (UIA) in patients with CAD. We also aimed to identify the possible predictive factors for morbidity and surgical complications in patients on antiplatelet treatment. METHODS: We retrospectively analyzed 401 consecutive patients who had undergone craniotomy for UIA at our institution between January 2006 and December 2016...
September 6, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28881114/intra-arterial-and-intravenous-tirofiban-infusion-for-thromboembolism-during-endovascular-coil-embolization-of-cerebral-aneurysm
#15
Sang Heum Kim, Tae Gon Kim, Min Ho Kong
OBJECTIVE: Thromboembolism is the one of the most serious complications that can occur during endovascular coil embolization of cerebral aneurysm. We report on the effectiveness and safety of intra-arterial/intravenous (IA/IV) glycoprotein IIb/IIIa inhibitor (tirofiban) infusion for treating thromboembolism during endovascular coil embolization of cerebral aneurysm. METHODS: We performed a retrospective analysis of 242 patients with ruptured or unruptured cerebral aneurysms (n=264) who underwent endovascular coil embolization from January 2011 to June 2014...
September 2017: Journal of Korean Neurosurgical Society
https://www.readbyqxmd.com/read/28881112/morphological-and-hemodynamic-parameters-for-middle-cerebral-artery-bifurcation-aneurysm-rupture-risk-assessment
#16
Hao Qin, Qixia Yang, Qiang Zhuang, Jianwu Long, Fan Yang, Hongqi Zhang
OBJECTIVE: To investigate the morphological and hemodynamic parameters associated with middle cerebral artery (MCA)bifurcation aneurysm rupture. METHODS: A retrospective study of 67 consecutive patients was carried out based on 3D digital subtraction angiography data. Morphological and hemodynamic parameters including aneurysm size parameters (dome width, height, and perpendicular height), longest dimension from the aneurysm neck to the dome tip, neck width, aneurysm area, aspect ratio, Longest dimension from the aneurysm neck to the dome tip (Dmax) to dome width, and height-width, Bottleneck factor, as well as wall shear stress (WSS), low WSS area (LSA), percentage of LSA (LSA%) and energy loss (EL) were estimated...
September 2017: Journal of Korean Neurosurgical Society
https://www.readbyqxmd.com/read/28875285/current-status-of-cardiovascular-surgery-in-japan-2013-and-2014-a-report-based-on-the-japan-cardiovascular-surgery-database-5-thoracic-aortic-surgery
#17
REVIEW
Hideyuki Shimizu, Norimichi Hirahara, Noboru Motomura, Hiroaki Miyata, Shinichi Takamoto
BACKGROUND: Although open aortic repair (OAR) is still considered to be a standard treatment for thoracic aortic diseases, the indications for thoracic endovascular treatment (TEVAR)/hybrid aortic repair (HAR) have expanded in recent years. The purpose of this study was to review the current status of treatment of thoracic aortic diseases in Japan. METHODS: Data for 2013 and 2014 concerning surgery for diseases of the thoracic/thoracoabdominal aorta were extracted from the Japan Cardiovascular Surgery Database (JCVSD)...
September 5, 2017: General Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28867172/untreated-unruptured-aneurysm-natural-history-at-long-term
#18
V Gilard, L Terrier, O Langlois, S Derrey, S Curey, F Proust
BACKGROUND AND OBJECTIVES: Although the diagnosis of unruptured intracranial aneurysm (IA) has become more frequent, its natural history and management still remain controversial. A better comprehension of its evolution could optimize our therapeutic strategies. The aim of our study was to evaluate, in a cohort of patients with untreated unruptured IA based on the proposition of multidisciplinary staff meetings, the proportion of bleeding, death and cardiovascular events during a long-term prospective follow-up...
August 31, 2017: Neuro-Chirurgie
https://www.readbyqxmd.com/read/28865323/impact-of-antithrombotic-treatment-on-clinical-outcomes-after-craniotomy-for-unruptured-intracranial-aneurysm
#19
Akira Nakamizo, Yuhei Michiwaki, Yousuke Kawano, Toshiyuki Amano, Satoshi Matsuo, Yutaka Fujioka, Tomoyuki Tsumoto, Masahiro Yasaka, Yasushi Okada
OBJECTIVE: Patients receiving antithrombotic treatment occasionally undergo craniotomy. We aimed to explore the impact of perioperative use of antithrombotic agents on the occurrence of surgical complications and clinical outcomes in patients with unruptured intracranial aneurysm (UIA). PATIENTS AND METHODS: We retrospectively analyzed 401 consecutive patients who had undergone craniotomy for UIA at our institution between January 2006 and December 2016. Patients were divided into two groups: those who received oral antiplatelet and/or anticoagulant agents during the perioperative period (antithrombotic treatment group, n=45); and those who did not (no antithrombotic treatment group, n=356)...
August 30, 2017: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/28862551/isolated-abducens-nerve-palsy-associated-with-subarachnoid-hemorrhage-a-localizing-sign-of-ruptured-posterior-inferior-cerebellar-artery-aneurysms
#20
Jan-Karl Burkhardt, Ethan A Winkler, George F Lasker, John K Yue, Michael T Lawton
OBJECTIVE Compressive cranial nerve syndromes can be useful bedside clues to the diagnosis of an enlarging intracranial aneurysm and can also guide subsequent evaluation, as with an acute oculomotor nerve (cranial nerve [CN] III) palsy that is presumed to be a posterior communicating artery aneurysm and a surgical emergency until proven otherwise. The CN VI has a short cisternal segment from the pontomedullary sulcus to Dorello's canal, remote from most PICA aneurysms but in the hemodynamic pathway of a rupturing PICA aneurysm that projects toward Dorello's canal...
September 1, 2017: Journal of Neurosurgery
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