Search Results
Results 251 - 300 of 3471
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Kimura Naoto - - 2010
The major initiation process of intracranial aneurysms is thought to involve endothelial dysfunction due to hemodynamic stress. Angiotensin II type 1 receptor blockers and statins improve vascular endothelium function. The effects of olmesartan and pravastatin were investigated on the development of experimental aneurysms in rats. Eighty-three rats underwent aneurysm induction. ...
Harreld J H - - 2011
SUMMARY: Lenticulostriate aneurysms are rare and usually present with intracranial hemorrhage, limiting understanding of their natural course. We describe an unusual case of an unruptured rapidly growing distal LSA aneurysm in the setting of Moyamoya disease, successfully embolized with n-BCA following functional neurologic testing with amobarbital.
Gowland P-A - - 2010
Syphilis was once the most common cause of aortic aneurysm. For the last 60 years syphilis has been well controlled in the UK population. However, we present the recent case of a 52-year-old female black South African immigrant who was found to have a syphilitic aneurysm.
Akiyama Yukinori - - 2010
Decision-making during the management of unruptured cerebral aneurysms is a delicate process for both neurosurgeons and patients. Guidelines are evidence-based references that can aid in making decisions. However, neurosurgeons do not always follow guidelines in clinical practice. The purpose of this study is to verify the hypothesis that there is ...
Kelly S C - - 2010
This work reports on the implementation and validation of a two-system, single-analysis, fluid-structure interaction (FSI) technique that uses the finite volume (FV) method for performing simulations on abdominal aortic aneurysm (AAA) geometries. This FSI technique, which was implemented in OpenFOAM, included fluid and solid mesh motion and incorporated a non-linear ...
Ishikawa Tatsuya - - 2010
Craniotomy and clipping have been robust treatments for ruptured cerebral aneurysm for more than 50 years, with satisfactory overall outcomes. Technical advances, such as developments in microsurgical tools and equipment, adjunctive therapy, and novel monitoring methods enable safer and more efficient treatment. However, overall surgical results have not shown any ...
Misaki Kouichi - - 2010
A 65-year-old man presented with a hyperplastic anomalous anterior choroidal artery (AChA) associated with a ruptured internal carotid artery aneurysm at the origin of a perforating artery manifesting as sudden onset of headache and vomiting. The aneurysm was too small for endovascular embolization, so we performed open surgery via the ...
Yerramneni Vamsi K - - 2010
Oculomotor nerve palsy (ONP) can be the presenting feature of ruptured or an unruptured posterior communicating artery (PcomA) aneurysm. Etiopathogenesis and recovery of ONP following treatment of PcomA aneurysm has been a subject of controversy. Case records of thirteen patients (mean age 42 years (range 19-65 years), M:F: 3:10) with ...
Romani Rossana - - 2010
Microneurosurgical techniques introduced by Prof. Ya┼čargil have been modified by the senior author (JH) when treating more than 4,000 patients with aneurysms at two of the Departments of Neurosurgery in Finland, Kuopio and Helsinki, with a total catchment area of close to three million people. This experience is reviewed, and ...
Date Isao - - 2010
Development of less invasive imaging studies, such as magnetic resonance angiography, has increased the chances that unruptured cerebral aneurysms are found. The rupture risk of "symptomatic" aneurysms is higher than for "asymptomatic" aneurysms; so "symptomatic" aneurysms are more often surgically treated. Many reviews examine "asymptomatic" unruptured cerebral aneurysms, but few ...
Lehecka Martin - - 2010
Background: Distal anterior cerebral artery (DACA) aneurysms, also known as pericallosal artery aneurysms, represent about 6% of all intracranial aneurysms. They are located on the A2-A5 segments of the anterior cerebral artery and on its distal branches. Methods: This paper summarizes present knowledge on radiological features, treatment options, treatment results, ...
Kawahara Ichiro - - 2010
We describe two rare cases of de novo basilar head aneurysms. The first patient presented with a ruptured basilar tip aneurysm, which developed de novo 5 years after the clipping of a left middle cerebral artery aneurysm. The second patient presented with a right basilar artery-superior cerebellar artery aneurysm, which ...
Nakamura Homare - - 2010
A 50-year-old man presented with a dissecting aneurysm arising from the extracranial portion of the right posterior inferior cerebellar artery (PICA) causing subarachnoid hemorrhage (SAH) and manifesting as sudden onset of disturbed consciousness. Computed tomography showed SAH with ventricular reflux predominantly in the posterior fossa. Angiography revealed a fusiform aneurysm ...
Ishii Daizo - - 2010
A 73-year-old woman presented with subarachnoid hemorrhage caused by a ruptured left distal anterior inferior cerebellar artery (AICA) aneurysm. Computed tomography showed a thin subarachnoid hemorrhage in the ambient cistern, and digital subtraction angiography revealed an aneurysm arising from the lateral branch of the left AICA, which was separate from ...
Phi Ji Hoon - - 2010
OBJECTIVE: Aneurysms that arise from a small branch of the posterior inferior cerebellar artery (PICA) are very rare. All reported PICA branch aneurysms originated from the choroidal branches or PICA communicating branches. No aneurysms of the PICA medullary branch have been reported previously. CLINICAL PRESENTATION: A 62-year-old woman presented with ...
Srivastava Sunita D - - 2010
BACKGROUND: The aim of this study was to evaluate the surgical management of carotid artery aneurysms (CAAs) presenting to a tertiary care center over a 10-year period of time. METHODS: The medical records of patients undergoing repair of CAA between 1998 and 2008 were reviewed. Demographics, clinical presentation, and operative ...
Nishijima Yasuo - - 2010
A 40-year-old woman with Cushing's disease presented with hypertensive cerebral hemorrhage. Neuroimaging detected an unruptured large intracavernous aneurysm, which projected beyond the midline, and thin crescent-shaped adenoma along the aneurysm wall. The aneurysm was treated with endovascular tight packing with coils. Transsphenoidal adenomectomy was then safely performed. The signs of ...
Oyama Hirofumi - - 2010
A 65-year-old female presented with an extremely rare case of a ruptured thrombosed large aneurysm of the anterior inferior cerebellar artery (AICA) in which a local hematoma compressed the medulla oblongata and caused acute respiratory failure. She first presented with dizziness, general fatigue, and nausea 2 months before admission. She ...
Inagawa Tetsuji - - 2010
BACKGROUND AND PURPOSE: A community-based study was conducted to estimate the site distribution of ruptured intracranial aneurysms and to evaluate clinical features related to aneurysm site. METHODS: The author reviewed data from 358 patients with aneurysmal subarachnoid hemorrhage (SAH) treated between 1980 and 1998 in Izumo, Japan. In 291 of ...
Sano Hirotoshi - - 2010
Objective: To evaluate the efficacy of multiple clip application for the occlusion of complex intracranial aneurysms, analyzing the technique and outcome of big and giant cerebral aneurysms clipped in our institution. Method: A total of 259 giant and large intracranial aneurysms (65 ruptured and 193 unruptured) were treated at Fujita ...
Okazaki Toshiyuki - - 2010
A 40-year-old male smoker presented with a ruptured saccular aneurysm that formed de novo 10 months after normal magnetic resonance (MR) angiography findings. Computed tomography of the head at the second admission showed subarachnoid hemorrhage in the interhemispheric fissure and anterior basal cistern. MR and conventional cerebral angiography revealed an ...
Joo Sung-Pil - - 2010
A 62-year-old woman presented with subarachnoid hemorrhage manifesting as sudden onset of headache, but without visual symptoms or extraocular movement disturbances. Computed tomography angiography showed a 7-mm size aneurysm originating from the internal carotid-posterior communicating artery (PcomA). After the neck of the aneurysm was clipped, the PcomA was confirmed to ...
Kato Ryusuke - - 2010
Gastroepiploic artery aneurysm (GEAA) is very rare.1 Furthermore, most GEAA cases are diagnosed after their rupture. We report a case of asymptomatic GEAA. The patient was a 61-year-old man. Sonography (US) revealed a 2-cm anechoic mass in the epigastrium near the anterior abdominal wall. Color Doppler US and contrast-enhanced US ...
Vora Nirav - - 2010
BACKGROUND: We sought to report our technical success and complications in treating distal anterior cerebral artery (ACA) aneurysms with coil embolization. METHODS: We retrospectively reviewed all patients undergoing coil embolization of distal ACA aneurysms from September 1999 to March 2008. Patients were assessed for subarachnoid hemorrhage, fundus size, and fundus-to-neck ...
Sugino Toshiya - - 2010
A 68-year-old woman presented with severe headache 9 days after undergoing successful clipping of a right middle cerebral artery aneurysm. Postoperative imaging revealed increased perfusion and diffuse edema in the right frontotemporal cortex. A 57-year-old woman exhibited perseveration soon after undergoing successful clipping of an anterior communicating artery aneurysm. Postoperative ...
Meyers P M - - 2010
BACKGROUND AND PURPOSE: The goal of this article is to provide consensus recommendations for reporting standards, terminology, and written definitions when reporting on the radiological evaluation and endovascular treatment of intracranial, cerebral aneurysms. These criteria can be used to design clinical trials, to provide uniformity of definitions for appropriate selection ...
Bhat Seetharama P S - - 2010
Angiolymphoid hyperplasia with eosinophilia (ALHE) is an unusual vascular tumor most frequently located in the superficial head and neck. Noncutaneous localization of this pathology in large arteries presenting as a pulsatile mass is extremely rare. We describe an adult male with a giant left axillary artery tumor secondary to ALHE. ...
Nomura Motohiro - - 2010
A 77-year-old woman presented with a rare case of nontraumatic intracavernous internal carotid artery (ICA) aneurysm causing epistaxis. The thrombosed aneurysm was discovered incidentally, and was not treated. However, she suffered massive nasal bleeding 22 months after the initial diagnosis. The lesion was successfully treated by endovascular coil embolization. The ...
Cocco Giuseppe - - 2010
Behçet's disease (BD) is an enigmatic inflammatory disorder, with vasculitis (perivasculitis) underlying pathophysiology of its multisystemic affections. Venous pathology and thrombotic complications are hallmarks of BD. However, it has been increasingly recognized that cardiac involvement and arterial complications (aneurysms, pseudoaneurysms, rupture and thrombosis) are important part of the course of ...
Chodhary Maitri - - 2010
We report here, the case of a six-and-a-half-month-old boy investigated for persistent respiratory distress and homogeneous opacity in the left upper lobe. Echocardiography revealed a giant ductal aneurysm compressing the left pulmonary artery and upper lobe division of the left bronchus. Computerized tomography angiogram delineated the exact anatomy and prompt ...
Emrecan Bilgin - - 2010
Neurofibromatosis is an autosomal dominant genetic disease characterized by abnormal growth that involves tissues of mesodermal and neuroectodermal origin. Aneurysms are rarely seen in peripheral arteries. This report presents a case of ruptured arterial aneurysm secondary to neurofibromatosis; the lesion occurred in the profunda femoris artery, a highly unusual location. ...
Weil Alexander G - - 2010
Aneurysmal rupture causing pure acute subdural hematoma (aSDH) is rare. In the four previously reported cases of distal anterior cerebral artery (ACA) aneurysm resulting in pure aSDH, blood distribution in the interhemispheric (IH) space has systematically incriminated the distal ACA as the source of rupture. We present a misleading case ...
Bahcivan Muzaffer - - 2010
Peripheral arterial aneurysms (PAA) may rupture, cause emboli and ischemia, and local symptoms due to compression. A total of 109 patients who underwent surgery for PAA were analyzed retrospectively, including clinical presentation, surgical procedures used, and postoperative follow-up data obtained 10 days after discharge. True aneurysm was present in 59 ...
van der Kolk Nicolien M NM Department of Neurology, Rudolf Magnus Institute of Neuroscience, University Medical Centre, Utrecht, The - - 2010
Aneurysms on the posterior circulation, most commonly located at the basilar top, have a higher risk of rupture than aneurysms on the anterior circulation. If hemodynamic shear stress, which has its maximum impact at the distal carina of bifurcations, explains the higher rupture rate of basilar top aneurysms, aneurysms at ...
Valencia Alvaro A Department of Mechanical Engineering, Universidad de Chile, Santiago, Chile. - - 2010
Hemodynamically induced stress plays an important role in the progression and rupture of cerebral aneurysms. The current work describes computational fluid dynamics (CFD) simulations in anatomically realistic models of cerebral aneurysms. Twenty lateral aneurysms models were investigated. The models were obtained from three-dimensional rotational angiographic imaging data and CFD were ...
Valencia C C Computational Imaging & Simulation Technologies in Biomedicine (CISTIB), Universitat Pompeu Fabra (UPF), Barcelona, Spain. - - 2010
The rupture of intracranial aneurysms is associated to significant morbidity and mortality rates. Although the mechanisms triggering this event are still unclear, morphology is among the factors considered by interventional neuroradiologists to decide treatment. The aim of this work is to explore the potential of morphological descriptors as rupture risk ...
Yamamoto Hiroshi - - 2010
A 56-year-old man with a painful, progressively enlarging pulsatile mass in the bilateral popliteal fossae was diagnosed with a bilateral popliteal artery aneurysm (PAA) and referred to our hospital to undergo surgical therapy. Computed tomographic scanning demonstrated a large, middle-type PAA with a rich mural thrombus in the bilateral popliteal ...
Krings Timo - - 2010
Pediatric aneurysms are rare diseases distinct from classical adult aneurysms and therefore require different treatment strategies. Apart from saccular aneurysms that are more commonly found in older children, three major pathomechanisms may be encountered: trauma, infection, and dissection. The posterior circulation and more distal locations are more commonly encountered in ...
Baek H - - 2010
We investigate the flow dynamics and oscillatory behaviour of wall shear stress (WSS) vectors in intracranial aneurysms using high resolution numerical simulations. We analyse three representative patient-specific internal carotid arteries laden with aneurysms of different characteristics: (i) a wide-necked saccular aneurysm, (ii) a narrower-necked saccular aneurysm, and (iii) a case ...
Sabharwal Tarun - - 2009
We sought to determine whether differences exist in the factors associated with transient coronary artery (CA) dilation only compared to CA aneurysms after Kawasaki disease (KD). We reviewed all patients with KD assessed and treated at a single tertiary institution from January 1990 to April 2007. Of 1,374 patients (63% ...
Sharma Bhawani S - - 2010
Ophthalmic segment aneurysms account for about 5% of all intracranial aneurysms. Anatomical complexity of the paraclinoid region makes surgical management of aneurysms arising from the ophthalmic segment challenging. This study was carried out to assess the presenting features, complications and outcomes after surgical treatment of ophthalmic segment aneurysms. The authors ...
Lu Pei-Hua PH Department of General Surgery, Wuxi People's Hospital of Nanjing Medical University, No. 299, Qingyang Road, Wuxi 214023, Jiangsu Province, China. - - 2009
The occurrence of concomitant aortic aneurysm and colorectal cancer is a rare medical entity, and controversy surrounds its optimal treatment. We report a case of rectal cancer and concomitant aneurysm from the ascending aorta to the common iliac artery. As with DeBakey type I aortic dissecting aneurysm, our patient was ...
Imai Yohsuke - - 2010
ATP acts as an extracellular signaling molecule in purinergic signaling that regulates vascular tone. ATP binds purinergic P2 nucleotide receptors on endothelial cells. Understanding the mass transport of ATP to endothelial cells by blood flow is thus important to predict functional changes in aneurysmal walls. While some clinical observations indicate ...
So Tiffany Y - - 2010
This study sought to define the growth of unruptured intracranial aneurysms, in particular the frequency of growth and the characteristic factors predictive of growth. Two hundred and eight patients with 285 unruptured aneurysms were followed. Electronic records and angiographic films were obtained for measurements of aneurysm size. The mean follow-up ...
Takemura Yusuke - - 2010
Currently, the characteristics of aneurysms arising in the distal middle cerebral artery (dMCA) are not well understood. Here, we report the case of a 56-year-old woman with a ruptured saccular aneurysm in the M2 segment of the middle cerebral artery (MCA). The patient presented with a disturbance of consciousness, and ...
Mariniello G - - 2010
Fusiform aneurysms of the A1 segment of the anterior cerebral artery (ACA) are exceptional, with only 15 reported cases. This article presents an additional case treated by microsurgical trapping. The aim is to discuss the treatment of these aneurysms based on the aneurysm morphology and the anatomy of the ACA ...
Sugita Masao - - 2009
A 75-year-old man was referred to our hospital with a thrombosed giant middle cerebral artery aneurysm manifesting as progressive memory disturbance and disorientation. Magnetic resonance imaging and conventional angiography revealed a partially thrombosed giant aneurysm of the left middle cerebral artery bifurcation and edema of the adjacent brain which had ...
Drac Petr - - 2009
BACKGROUND: During the last ten years we diagnosed two cases of venous aneurysm. The purpose of this report was to point out a certain risk of the thrombembolism of superficial venous aneurysms and to review our experience in the management of superficial and deep venous aneurysms. METHODS: The presentation and ...
Daugherty Wilson P - - 2009
Intracranial aneurysms in the pediatric population are relatively rare entities. Immunocompromised patients (often from HIV/AIDS or pharmacological immunosuppression) represent a significant fraction of children with cerebral aneurysms. One proposed mechanism of aneurysm formation in these patients is from direct infection of the affected arteries. In this study, the authors report ...
Caroli M - - 2009
Bilateral intracavernous carotid artery aneurysms are very rare and can be usually observed in patients with multiple intracranial aneurysms. Here we present the case of a 73 year-old woman who experienced worsening diplopia due to progressive bilateral paresis of the lateral rectus muscles. Computed tomography (CT) and magnetic resonance imaging ...
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