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Aneurysm embolization

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https://www.readbyqxmd.com/read/28078379/chitosan-sodium-tetradecyl-sulfate-hydrogel-characterization-and-preclinical-evaluation-of-a-novel-sclerosing-embolizing-agent-for-the-treatment-of-endoleaks
#1
Fatemeh Zehtabi, Vincent Dumont-Mackay, Ahmed Fatimi, Antony Bertrand-Grenier, Hélène Héon, Gilles Soulez, Sophie Lerouge
PURPOSE: To compare the efficacy of an embolization agent with sclerosing properties (made of chitosan and sodium tetradecyl sulfate, CH-STS) with a similar embolization agent but without sclerosing properties (made of chitosan, CH) in treating endoleaks in a canine endovascular aneurysm repair model. METHODS: Two chitosan-based radiopaque hydrogels were prepared, one with STS and one without STS. Their rheological, injectability, and embolizing properties were assessed in vitro; afterwards, their efficacy in occluding endoleaks was compared in a canine bilateral aneurysm model reproducing type I endoleaks (n = 9 each)...
January 11, 2017: Cardiovascular and Interventional Radiology
https://www.readbyqxmd.com/read/28077523/autologous-adipose-derived-mesenchymal-stem-cells-improve-healing-of-coiled-experimental-saccular-aneurysms-an-angiographic-and-histopathological-study
#2
Aymeric Rouchaud, Waleed Brinjikji, Daying Dai, Yong-Hong Ding, Tina Gunderson, Dana Schroeder, Laurent Spelle, David F Kallmes, Ramanathan Kadirvel
PURPOSE: Long-term occlusion of coiled aneurysms frequently fails, probably because of poor intrasaccular healing and inadequate endothelialization across the aneurysm neck. The purpose of this study was to determine if attachment of autologous mesenchymal stem cells (MSCs) to platinum coils would improve the healing response in an elastase-induced aneurysm model in rabbits. MATERIALS AND METHODS: With approval from the institutional animal care and use committee, aneurysms were created in rabbits and embolized with control platinum coils (Axium; Medtronic) (n=6) or coils seeded ex vivo with autologous adipose-tissue MSCs (n=7)...
January 11, 2017: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/28070101/a-case-of-an-unruptured-hepatic-aneurysm-on-the-common-hepatic-artery-at-the-junction-of-the-gastroduodenal-and-proper-hepatic-arteries-treated-with-transcatheter-arterial-embolization
#3
Yusuke Imai, Masashi Hirooka, Yohei Koizumi, Yoshiko Nakamura, Takao Watanabe, Osamu Yoshida, Yoshio Tokumoto, Eiji Takeshita, Masanori Abe, Yoichi Hiasa
Hepatic aneurysms are rare, but can prove fatal once they rupture. Transcatheter arterial embolization (TAE) is performed as a prophylactic treatment. The position of the aneurysm determines the degree of difficulty of TAE. Maintaining blood flow to the liver can become difficult, particularly when the aneurysm is at an arterial junction. The patient was a 72-year-old man diagnosed with a hepatic aneurysm. The aneurysm was situated on the common hepatic artery at the junction of the gastroduodenal and proper hepatic arteries...
2017: Nihon Shokakibyo Gakkai Zasshi, the Japanese Journal of Gastro-enterology
https://www.readbyqxmd.com/read/28064352/pipeline-embolization-device-for-the-treatment-of-a-traumatic-intracranial-aneurysm-in-a-child
#4
Felipe Padovani Trivelato, Marco Túlio Salles Rezende, Luiz Venâncio Fonseca, Lucas Eduardo Bonadio, Alexandre Cordeiro Ulhôa, Daniel Giansante Abud
INTRODUCTION: Traumatic intracranial aneurysms in children are rare and may occur as the result of closed or penetrating head trauma. Their natural history seems to be more aggressive. Most traumatic aneurysms have complex shape, tending to have a large neck or even a fusiform morphology. CASE REPORT: We present a case of a traumatic carotid artery aneurysm in a 9-year-old girl that was successfully treated with pipeline embolization device. DISCUSSION: Due to its dissecting nature, wall friability and lack of a substantial neck can make surgical clipping and selective coiling difficult and risky...
January 7, 2017: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/28062804/delayed-enhancing-lesions-after-coil-embolization-of-aneurysms-clinical-experience-and-benchtop-analyses
#5
Se Won Oh, Na Young Shin, Ho-Joon Lee, Byung Moon Kim, Dong Joon Kim
BACKGROUND: Foreign body emboli during endovascular treatment (EVT) may cause delayed enhancing lesions (DELs). OBJECTIVE: To report our experiences of this complication in patients treated for cerebral aneurysms and to investigate the cause of the lesions by benchtop analyses. METHODS: Three patients with DELs on MRI after EVT were retrospectively investigated. Unusual friction had occurred in the midst of coil delivery in two patients. The imaging findings, cause of the lesions due to the devices used for the procedure, treatment, and follow-up results were assessed...
January 6, 2017: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/28059658/parent-vessel-occlusion-after-pipeline-embolization-of-cerebral-aneurysms-of-the-anterior-circulation
#6
Matthew B Potts, Maksim Shapiro, Daniel W Zumofen, Eytan Raz, Erez Nossek, Keith G DeSousa, Tibor Becske, Howard A Riina, Peter K Nelson
OBJECTIVE The Pipeline Embolization Device (PED) is now a well-established option for the treatment of giant or complex aneurysms, especially those arising from the anterior circulation. Considering the purpose of such treatment is to maintain patency of the parent vessel, postembolization occlusion of the parent artery can be regarded as an untoward outcome. Antiplatelet therapy in the posttreatment period is therefore required to minimize such events. Here, the authors present a series of patients with anterior circulation aneurysms treated with the PED who subsequently experienced parent vessel occlusion (PVO)...
January 6, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28059632/pseudoaneurysm-formation-due-to-rupture-of-intracranial-aneurysms-case-series-and-literature-review
#7
Motohiro Nomura, Kentaro Mori, Akira Tamase, Tomoya Kamide, Syunsuke Seki, Yu Iida, Tatsu Nakano, Yuichi Kawabata, Taro Kitabatake, Teruyuki Nakajima, Kiyoyuki Yasutake, Kei Egami, Tatsunori Takahashi, Mitsuyuki Takahashi, Kunio Yanagimoto
Background Intracranial pseudoaneurysm formation due to a ruptured non-traumatic aneurysm is extremely rare. We describe the radiological findings and management of pseudoaneurysms due to ruptured cerebral aneurysms in our case series and previously reported cases. Patients and methods Four additional and 20 reported patients presenting with subarachnoid hemorrhage (SAH) are included. Radiological findings and clinical features of these patients were reviewed. Results In our series, three-dimensional computed tomographic angiography (3D-CTA) and/or angiography showed an irregular- or snowman-shaped cavity extending from the parent artery...
January 1, 2017: Neuroradiology Journal
https://www.readbyqxmd.com/read/28056454/collar-sign-in-incompletely-occluded-aneurysms-after-pipeline-embolization-evaluation-with-angiography-and-optical-coherence-tomography
#8
C J Griessenauer, R Gupta, S Shi, A Alturki, R Motiei-Langroudi, N Adeeb, C S Ogilvy, A J Thomas
BACKGROUND AND PURPOSE: Flow diversion with the Pipeline Embolization Device has emerged as an attractive treatment for cerebral aneurysms. Processes involved in aneurysm occlusion include changes in intra-aneurysmal hemodynamics and endothelialization of the device. Here, we call attention to a radiographic sign not previously reported that is detected in incompletely occluded aneurysms after treatment with the Pipeline Embolization Device at angiographic follow-up and referred to as the "collar sign...
November 10, 2016: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28053848/rapid-development-of-a-mycotic-aneurysm-of-the-intracranial-artery-secondary-to-scedosporium-apiospermum-sinusitis
#9
Yoshihiko Ogawa, Masatoshi Sato, Masato Tashiro, Masayuki Miyazaki, Kiyoshi Nagata, Nobuyuki Takahashi, Kei Kasahara, Koichi Izumikawa, Hisakazu Yano, Keiichi Mikasa
An 85-year-old man complained of a 2-month history of pain on the left side of his face. Brain computed tomography (CT) and magnetic resonance imaging/magnetic resonance angiography did not clearly show any intracranial abnormality and only showed fluid effusion in his left sphenoid sinus. Filamentous fungi were detected from the left sphenoid sinus specimen. The isolate was Scedosporium apiospermum. He was empirically treated with voriconazole, to which the isolate was susceptible. His consciousness decreased rapidly...
December 2016: Medical Mycology Case Reports
https://www.readbyqxmd.com/read/28048545/we-de-207a-04-advances-in-radiological-neuro-endovascular-interventional-imaging
#10
S Rudin
: 1. Parallels in the evolution of x-ray angiographic systems and devices used for minimally invasive endovascular therapy Charles Strother - DSA, invented by Dr. Charles Mistretta at UW-Madison, was the technology which enabled the development of minimally invasive endovascular procedures. As DSA became widely available and the potential benefits for accessing the cerebral vasculature from an endovascular approach began to be apparent, industry began efforts to develop tools for use in these procedures...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048454/we-de-207a-00-advances-in-image-guided-neurointerventions-clinical-pull-and-technology-push
#11
Jeffrey Siewerdsen, Rebecca Fahrig
: 1. Parallels in the evolution of x-ray angiographic systems and devices used for minimally invasive endovascular therapy Charles Strother - DSA, invented by Dr. Charles Mistretta at UW-Madison, was the technology which enabled the development of minimally invasive endovascular procedures. As DSA became widely available and the potential benefits for accessing the cerebral vasculature from an endovascular approach began to be apparent, industry began efforts to develop tools for use in these procedures...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047800/we-de-207a-01-parallels-in-the-evolution-of-x-ray-angiographic-systems-and-devices-used-for-minimally-invasive-endovascular-therapy
#12
C Strother
: 1. Parallels in the evolution of x-ray angiographic systems and devices used for minimally invasive endovascular therapy Charles Strother - DSA, invented by Dr. Charles Mistretta at UW-Madison, was the technology which enabled the development of minimally invasive endovascular procedures. As DSA became widely available and the potential benefits for accessing the cerebral vasculature from an endovascular approach began to be apparent, industry began efforts to develop tools for use in these procedures...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047144/we-de-207a-02-advances-in-cone-beam-ct-anatomical-and-functional-imaging-in-angio-suite-to-enable-one-stop-shop-stroke-imaging-workflow
#13
G Chen
: 1. Parallels in the evolution of x-ray angiographic systems and devices used for minimally invasive endovascular therapy Charles Strother - DSA, invented by Dr. Charles Mistretta at UW-Madison, was the technology which enabled the development of minimally invasive endovascular procedures. As DSA became widely available and the potential benefits for accessing the cerebral vasculature from an endovascular approach began to be apparent, industry began efforts to develop tools for use in these procedures...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046482/we-de-207a-03-recent-advances-in-devices-used-in-neuro-interventions
#14
M Gounis
: 1. Parallels in the evolution of x-ray angiographic systems and devices used for minimally invasive endovascular therapy Charles Strother - DSA, invented by Dr. Charles Mistretta at UW-Madison, was the technology which enabled the development of minimally invasive endovascular procedures. As DSA became widely available and the potential benefits for accessing the cerebral vasculature from an endovascular approach began to be apparent, industry began efforts to develop tools for use in these procedures...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28043886/microcatheter-looping-technique-mlt-facilitates-the-embolization-of-complex-intracranial-aneurysms-with-an-acute-angle-branch-incorporated-into-the-sac
#15
Zhang Xiaoxi, Cai Jing, Huang Qinghai, Liu Jianmin, Hong Bo, Dai Dongwei
PURPOSE: Intracranial aneurysms with an acutely angled parent vessel are difficult to enter using conventional techniques. This study examined the efficacy, safety, and technical aspects of the intraluminal, intra-aneurysmal, and in vitro microcatheter looping techniques. MATERIALS AND METHODS: Twenty-nine consecutive patients harboring intracranial aneurysms with an incorporated acute angle branch were treated with a microcatheter looping technique (MLT) after having failed treatment with conventional techniques...
December 30, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/28042563/unusual-presentation-of-a-cervical-mass-revealed-as-external-jugular-venous-aneurysm
#16
Su Wan Kim, Jee Won Chang, Seogjae Lee
Venous aneurysms of the jugular vein are one of the rare causes of neck swelling, and primary venous aneurysms of the external jugular vein are extremely rare. A 46-year-old woman presented with a painless and suddenly growing mass in the left neck. A computed tomography angiography revealed a fusiform venous aneurysm of the external jugular vein containing intraluminal thrombus. We performed resection of the aneurysm and ligation of the external jugular vein. Removal of the aneurysm of the neck vein was necessary because venous aneurysms with thrombosis may lead to serious thrombotic complications such as pulmonary embolism...
December 2016: Vascular Specialist International
https://www.readbyqxmd.com/read/28042554/chronological-change-of-the-sac-after-endovascular-aneurysm-repair
#17
Min Hyun Kim, Hyung Sub Park, Sanghyun Ahn, Sang-Il Min, Seung-Kee Min, Jongwon Ha, Taeseung Lee
PURPOSE: The purpose of this study was to evaluate the potential risk factors of type II endoleak and sac growth after endovascular aneurysm repair (EVAR) and the outcomes of secondary interventions. MATERIALS AND METHODS: Ninety seven patients underwent elective EVAR for infrarenal abdominal aortic aneurysms in two tertiary centers between April 2005 and July 2013. Clinical and imaging parameters were compared among sac growth (>5 mm) and non-growth groups. Risk factors associated with sac growth and persistent type II endoleak were analyzed...
December 2016: Vascular Specialist International
https://www.readbyqxmd.com/read/28031689/the-safety-of-using-large-amount-30-cc-of-onyx-ethylene-vinyl-alcohol-copolymer-for-the-treatment-of-large-type-ii-endoleak-after-endovascular-repair-of-abdominal-aortic-aneurysm
#18
Mohammad Hasan Namazi, Isa Khaheshi, Ali Reza Serati, Mohammad Reza Movahed
Endovascular aneurysm repair (EVAR) is associated with late complications including the development of endoleaks as major complications. Type II endoleak is the consequence of collateral retrograde flow from the aortic branches; generally from the lumbar arteries, inferior mesenteric artery, or middle sacral artery. The method and the ideal timing for the treatment of endoleaks remain controversial. We are presenting a case of successful treatment of a large type II endoleak using embolization with large amount of Onyx copolymer via a percutaneous transfemoral route without any adverse outcome...
December 2016: International Journal of Angiology: Official Publication of the International College of Angiology, Inc
https://www.readbyqxmd.com/read/28031685/staged-endovascular-repair-of-isolated-bilateral-internal-iliac-artery-aneurysms-a-case-report
#19
Chrisostomos Maltezos, George Galyfos, Stavros Kerasidis, Georgios Geropapas, Nikolaos Makris
This report aims to present an unusual case with isolated bilaterally located internal iliac artery aneurysms (IIAAs) that were incidentally detected. Owing to the high surgical risk of the patient and anatomical location of the aneurysms, an endovascular management was preferred. Initially, the patient underwent a percutaneous embolization of the right-sided aneurysm with coiling. A stent-graft deployment covering the orifice of the left-sided internal iliac artery and occluding the ipsilateral aneurysm followed 1 month later...
December 2016: International Journal of Angiology: Official Publication of the International College of Angiology, Inc
https://www.readbyqxmd.com/read/28031672/laparoscopic-left-gastric-artery-aneurysm-resection
#20
Vijay Kamath, Anthony L Rios, Nitin Mishra, Sandeep A Sathyanarayana, Kambhampaty V Krishnasastry, Eugene Rubach
Aneurysmal degeneration of the visceral branches of the abdominal aorta is a rare and potentially life-threatening disease entity. Visceral artery aneurysms (VAAs) are exceedingly rare and have a prevalence of 0.1 to 2%. The left gastric artery aneurysm (LGAA) is even more rare and accounts for less than 4% of all VAAs. There is scarce literature on treatment of LGAA by embolization; however, to date successful laparoscopic repair of an LGAA has not been described. We describe the successful treatment of an LGAA by laparoscopic ligation and resection in a 68-year-old male patient...
December 2016: International Journal of Angiology: Official Publication of the International College of Angiology, Inc
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