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Unruptured cerebral aneurysm

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https://www.readbyqxmd.com/read/28735142/bifurcation-location-and-growth-of-aneurysm-size-are-significantly-associated-with-an-irregular-shape-of-unruptured-intracranial-aneurysms
#1
Xin Feng, Baorui Zhang, Erkang Guo, Luyao Wang, Zenguhi Qian, Peng Liu, Xiaolong Wen, Wenjuan Xu, Chuhan Jiang, Youxiang Li, Zhongxue Wu, Aihua Liu
BACKGROUND AND OBJECTIVE: Previous studies firmly proved that an irregular aneurysmal shape was strongly associated with intracranial aneurysm (IA) rupture, but it is unclear how irregularly shaped intracranial aneurysms (IAs) form. We aimed to identify the factors related to irregular shape of IAs. METHOD: We retrospectively analyzed of consecutive patients evaluated or treated for IA at our institution from June 2015 to July 2016. According to the imaging morphology of aneurysm, the enrolled patients are divided into irregular and regular group...
July 19, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28733907/multiple-intracranial-aneurysms-a-direct-hemodynamic-comparison-between-ruptured-and-unruptured-vessel-malformations
#2
Philipp Berg, Oliver Beuing
PURPOSE: Despite numerous studies addressing the rupture risk of intracranial aneurysms that have been published, the assessment thereof still remains challenging. Image-based simulations enable a precise prediction of patient-specific blood flow information. However, those approaches normally consider only small segments of the complete cerebral vasculature. METHODS: To test the validity of the consideration of single aneurysms in one computational setup, domains of the complete anterior and posterior circulations with multiple intracranial aneurysms (MIA) were simulated...
July 21, 2017: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/28711292/perioperative-stroke-after-cerebral-aneurysm-clipping-risk-factors-and-postoperative-impact
#3
Ahmed I Kashkoush, Brian T Jankowitz, Chris Nguyen, Paul A Gardner, Daniel A Wecht, Robert M Friedlander, Yue-Fang Chang, Miguel Habeych, Donald Crammond, Jeffrey Balzer, Parthasarathy D Thirumala
Stroke is a devastating complication after intracranial aneurysm clipping. Understanding the risk factors that prognosticate perioperative stroke may help to identify patients that would benefit from neuroprotective therapy. This study assesses patient-specific independent predictors of perioperative stroke in relation to surgical aneurysm clipping. Additionally, this study evaluates the postoperative complications of stroke. We performed a retrospective chart review of 437 patients with ruptured and unruptured intracranial aneurysms, which underwent surgical clipping from 2006 to 2013...
July 12, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28692510/giant-serpentine-middle-cerebral-artery-aneurysm
#4
Xiao-Xiao Peng, Ming-Xing Wang, Hong-Xing Li, Ji-Rong Zhang
Giant serpentine aneurysms are rare entity, which have unique presentations and distinct angiographic features, with poor prognosis if not treated. In this paper, a patient with a giant serpentine aneurysm originated from right middle cerebral artery was reported. A 38-year-old woman suffered from progressively headache and vision declined. The computed tomography and magnetic resonance image revealed a partially calcified, large mass (approximately 80 × 70 × 60 mm sized) in the right frontal-temple lobe...
July 7, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28689391/the-incidence-and-characteristics-of-patients-with-small-ruptured-aneurysms-5-mm-in-subarachnoid-hemorrhage
#5
Joon-Ho Choi, Hyun-Seok Park
OBJECTIVE: Small unruptured aneurysms (<5 mm) are known for their very low risk of rupture, and are recommended to be treated conservatively. However, we encounter many patients with small ruptured aneurysms in the clinical practice. We aimed to investigate the incidence and characteristics of patients with small ruptured aneurysms. METHODS: We reviewed all patients admitted to our hospital with subarachnoid hemorrhage from January 2005 to December 2015. The patients were divided into two groups: those with aneurysms <5 mm (group S) and those with aneurysms ≥5 mm (group L)...
July 2017: Journal of Korean Neurosurgical Society
https://www.readbyqxmd.com/read/28664014/super-selective-balloon-test-occlusion-of-the-posterior-communicating-artery-in-the-treatment-of-a-posterior-cerebral-artery-fusiform-aneurysm-a-case-report
#6
Makoto Isozaki, Hiroshi Arai, Hiroyuki Neishi, Ryuhei Kitai, Ken-Ichiro Kikuta
We report the case of a 49-year-old man with underlying hypertension who developed diplopia lasting 2 months. Magnetic resonance imaging and digital subtraction angiography showed multi-lobular unruptured aneurysms in the P2 portion of the posterior cerebral artery (PCA) migrating into the interpeduncular cistern of the midbrain. Because the shapes of the aneurysms were serpentine fusiform and the posterior communicating artery (PCoA) was the fetal type, we planned anastomosis of the occipital artery to the P4 portion of the PCA followed by endovascular obliteration of the parent artery including the aneurysms...
October 2016: NMC Case Rep J
https://www.readbyqxmd.com/read/28654338/small-intracranial-aneurysms-diagnostic-accuracy-of-ct-angiography
#7
Zhen Lu Yang, Qian Qian Ni, U Joseph Schoepf, Carlo N De Cecco, Han Lin, Taylor M Duguay, Chang Sheng Zhou, Yan E Zhao, Guang Ming Lu, Long Jiang Zhang
Purpose To assess the accuracy of computed tomographic (CT) angiography for diagnosis of cerebral aneurysms 5 mm or smaller, with digital subtraction angiography (DSA) as the reference standard, in a large patient cohort Materials and Methods This retrospective study was approved by the local institutional review board with a waiver of written informed consent. A total of 1366 patients who underwent cerebral CT angiography followed by DSA were included. The performance of CT angiography for depiction of aneurysms was evaluated by two readers on a per-patient and per-aneurysm basis and based on size of aneurysm, location, and status of rupture...
June 26, 2017: Radiology
https://www.readbyqxmd.com/read/28637249/bypass-surgery-for-complex-intracranial-aneurysms-15-years-of-experience-at-a-single-institution-and-review-of-pertinent-literature
#8
Seung Pil Ban, Won-Sang Cho, Jeong Eun Kim, Chang Hyeun Kim, Jae Seung Bang, Young-Je Son, Hyun-Seung Kang, O-Ki Kwon, Chang Wan Oh, Moon Hee Han
BACKGROUND: Bypass surgery is a treatment option for complex intracranial aneurysms. OBJECTIVE: To determine the utility of bypass surgery for the treatment of complex intracranial aneurysms and to review the literature on this topic. METHODS: Sixty-two patients were included in this retrospective study. Unruptured aneurysms were dominant (80.6%), and the internal carotid artery was the most common location of the aneurysm (56.4%), followed by the middle cerebral artery (21...
June 14, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28637201/size-is-the-most-important-predictor-of-aneurysm-rupture-among-multiple-cerebral-aneurysms-post-hoc-subgroup-analysis-of-unruptured-cerebral-aneurysm-study-japan
#9
Masaaki Shojima, Akio Morita, Hirofumi Nakatomi, Shinjiro Tominari
BACKGROUND: Multiple cerebral aneurysms are encountered in approximately 15% to 35% of patients harboring unruptured cerebral aneurysms. It would be of clinical value to determine which of them is most likely to rupture. OBJECTIVE: To characterize features of the ruptured aneurysm relative to other concomitant fellow aneurysms in patients with multiple cerebral aneurysms. METHODS: From a total of 5720 patients who were prospectively registered in the Unruptured Cerebral Aneurysm Study in Japan, a subgroup of patients with multiple cerebral aneurysms who developed subarachnoid hemorrhage was extracted for this post hoc analysis...
June 20, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28623116/comparison-of-the-prevalence-of-ruptured-and-unruptured-cerebral-aneurysms-in-a-poor-urban-minority-population
#10
Todd S Miller, David Altschul, Nrupen Baxi, Joaquim Farinhas, David Pasquale, Judah Burns, David Gordon, Jacqueline Bello, Allan Brook, Eugene Flamm
BACKGROUND: Most ruptured cerebral aneurysms are small (<7 mm). Evidence suggests low rupture rates for such lesions (<1% per year). Population studies demonstrate a prevalence rate of 3.2%. This study simultaneously estimates the prevalence of aneurysms in a single geographic population while reporting the observed rate of aneurysmal subarachnoid hemorrhage (aSAH) in the same geographic region composed of a poor urban minority demographic. METHODS: This is an institutional review board-approved, Health Insurance Portability and Accountability Act of 1996-compliant retrospective study performed between 2005 and 2011 at a single center...
June 13, 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/28611648/complete-recovery-from-blindness-in-case-of-compressive-optic-neuropathy-due-to-unruptured-anterior-cerebral-artery-aneurysm
#11
Yurie Fukiyama, Hidehiro Oku, Yusuke Hashimoto, Yuko Nishikawa, Masahiro Tonari, Jun Sugasawa, Shigeru Miyachi, Tsunehiko Ikeda
It is not common for an isolated visual symptom to be the first indication of an aneurysm compressing the optic nerve. The compression can lead to blindness, and a recovery from the blindness is rare. We report a female with a left painless optic neuropathy caused by an unruptured anterior cerebral artery aneurysm. The patient had a temporal hemianopic visual field defect, which progressed to blindness in the left eye, while the right visual function was not affected. A coil embolization of the aneurysm completely restored her visual acuity to 20/20...
January 2017: Case Reports in Ophthalmology
https://www.readbyqxmd.com/read/28605486/aneurysm-morphology-and-prediction-of-rupture-an-international-study-of-unruptured-intracranial-aneurysms-analysis
#12
J Mocco, Robert D Brown, James C Torner, Ana W Capuano, Kyle M Fargen, Madhavan L Raghavan, David G Piepgras, Irene Meissner, John Huston Iii
BACKGROUND: There are conflicting data between natural history studies suggesting a very low risk of rupture for small, unruptured intracranial aneurysms and retrospective studies that have identified a much higher frequency of small, ruptured aneurysms than expected. OBJECTIVE: To use the prospective International Study of Unruptured Intracranial Aneurysms cohort to identify morphological characteristics predictive of unruptured intracranial aneurysm rupture. METHODS: A case-control design was used to analyze morphological characteristics associated with aneurysm rupture in the International Study of Unruptured Intracranial Aneurysms database...
June 10, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28586440/circumferential-wall-enhancement-on-magnetic-resonance-imaging-is-useful-to-identify-rupture-site-in-patients-with-multiple-cerebral-aneurysms
#13
Shunsuke Omodaka, Hidenori Endo, Kuniyasu Niizuma, Miki Fujimura, Toshiki Endo, Kenichi Sato, Shin-Ichiro Sugiyama, Takashi Inoue, Teiji Tominaga
BACKGROUND: Identification of rupture sites in patients with multiple intracranial aneurysms is largely based on aneurysm size, location, and shape. Finding circumferential enhancement along the aneurysm wall (CEAW) on magnetic resonance (MR) vessel wall imaging was recently shown to be indicative of ruptured aneurysm. OBJECTIVE: To investigate the hypothesis that a higher degree of CEAW would identify the site of rupture in patients with multiple aneurysms. METHODS: We prospectively performed quantitative analysis of CEAW in consecutive patients with both aneurysmal subarachnoid hemorrhage and multiple aneurysms (26 patients with a total of 62 aneurysms), using MR vessel wall imaging...
June 6, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28584682/safe-time-duration-for-temporary-middle-cerebral-artery-occlusion-in-aneurysm-surgery-based-on-motor-evoked-potential-monitoring
#14
Jun Tanabe, Tatsuya Ishikawa, Junta Moroi
BACKGROUND: Temporary vessel occlusion of the parent artery is an essential technique for aneurysm surgery. Our aim was to clarify the safe time for temporary occlusion for aneurysm surgery, that is the "safe time duration" (STD), in which brain tissue exposed to ischemia will almost never fall into even the ischemic penumbra during temporary occlusion of the middle cerebral artery (MCA), and even transient postoperative motor impairment will be rare using intraoperative motor-evoked potentials (MEP)...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/28583450/intraprocedural-rupture-of-unruptured-cerebral-aneurysms-during-coil-embolization-a-single-center-experience
#15
Su Hee Cho, Mohammed Denewer, Won Hyong Park, Jae Sung Ahn, Byung Duk Kwun, DeokHee Lee, Jung Cheol Park
OBJECTIVE: The incidence of intraprocedural rupture (IPR) during endovascular coiling is reported to range from 2% to 5%. In this study, we reviewed the single center experiences of IPR during coil embolization for unruptured intracranial aneurysm. METHODS: At our institution, 849 patients were treated with endovascular therapy for unruptured intracranial aneurysm between January 2011 and April 2016. Ten (1.18%) of these patients had documented IPR. We reviewed the medical data to evaluate the characteristics of the aneurysms, angiographic findings related to rupture, management, and outcomes...
June 2, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28575518/outcomes-of-elective-cerebral-aneurysm-treatment-performed-by-attending-neurosurgeons-after-night-work
#16
Kimon Bekelis, Ymeon Missios, Todd A MacKenzie
BACKGROUND: The association between long work hours and outcomes among attending surgeons remains an issue of debate. OBJECTIVE: To investigate whether operating emergently the night before an elective case was associated with inferior outcomes among attending neurosurgeons. METHODS: We executed a cohort study with unruptured cerebral aneurysm patients, who underwent endovascular coiling or surgical clipping from 2009 to 2013 and were registered in the Statewide Planning and Research Cooperative System database...
May 30, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28574388/specifications-of-intracranial-saccular-aneurysms-treated-by-endovascular-approach-using-detachable-coils
#17
D Gunia, G Ingorokva, E Ekvtimishvili, G Basiladze
The treatment of intracranial saccular aneurysms remains an actual problem due to this pathology prevalence among the human population (about 1-10%). For definition of efficiency and preventive importance of endovascular treatment, it is necessary to clear define which aneurysms are more suitable and operable for endovascular occlusion with minimal risk of complications and better final outcome. The aim of this study is to analyze anatomical features (location and structure) of intracranial saccular aneurysms and clinical data of patients who have been operated endovascular, with detachable coils in High Technology Medical Center University Clinic,Tbilisi, Georgia for the last 6 years...
April 2017: Georgian Medical News
https://www.readbyqxmd.com/read/28565988/postprocedural-midterm-and-long-term-results-of-cerebral-aneurysms-treated-with-flow-diverter-devices-7-year-experience-at-a-single-center
#18
Francesco Briganti, Giuseppe Leone, Luigi Cirillo, Oreste de Divitiis, Domenico Solari, Paolo Cappabianca
OBJECTIVE Flow diversion has emerged as a viable treatment option for selected intracranial aneurysms and recently has been gaining traction. The aim of this study was to evaluate the safety and effectiveness of flow-diverter devices (FDDs) over a long-term follow-up period. METHODS The authors retrospectively reviewed all cerebral aneurysm cases that had been admitted to the Division of Neurosurgery of the Università degli Studi di Napoli between November 2008 and November 2015 and treated with an FDD. The records of 60 patients (48 females and 12 males) harboring 69 cerebral aneurysms were analyzed...
June 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28565984/novel-use-of-flow-diversion-for-the-treatment-of-aneurysms-associated-with-arteriovenous-malformations
#19
Craig Kilburg, Philipp Taussky, M Yashar S Kalani, Min S Park
The use of flow-diverting stents for intracranial aneurysms has become more prevalent, and flow diverters are now routinely used beyond their initial scope of approval at the proximal internal carotid artery. Although flow diversion for the treatment of cerebral aneurysms is becoming more commonplace, there have been no reports of its use to treat flow-related cerebral aneurysms associated with arteriovenous malformations (AVMs). The authors report the cases of 2 patients whose AVM-associated aneurysms were managed with flow diversion...
June 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28565981/complications-associated-with-the-use-of-flow-diverting-devices-for-cerebral-aneurysms-a-systematic-review-and-meta-analysis
#20
Geng Zhou, Ming Su, Yan-Ling Yin, Ming-Hua Li
OBJECTIVE The objective of this study was to review the literature on the use of flow-diverting devices (FDDs) to treat intracranial aneurysms (IAs) and to investigate the safety and complications related to FDD treatment for IAs by performing a meta-analysis of published studies. METHODS A systematic electronic database search was conducted using the Springer, EBSCO, PubMed, Medline, and Cochrane databases on all accessible articles published up to January 2016, with no restriction on the publication year...
June 2017: Neurosurgical Focus
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