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https://www.readbyqxmd.com/read/27932511/ascending-and-descending-thoracic-vertebral-arteries
#1
P Gailloud, L Gregg, M S Pearl, D San Millan
Thoracic vertebral arteries are anastomotic chains similar to cervical vertebral arteries but found at the thoracic level. Descending thoracic vertebral arteries originate from the pretransverse segment of the cervical vertebral artery and curve caudally to pass into the last transverse foramen or the first costotransverse space. Ascending thoracic vertebral arteries originate from the aorta, pass through at least 1 costotransverse space, and continue cranially as the cervical vertebral artery. This report describes the angiographic anatomy and clinical significance of 9 cases of descending and 2 cases of ascending thoracic vertebral arteries...
December 8, 2016: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/27927019/treatment-of-a-giant-vertebral-artery-pseudoaneurysm-secondary-to-gunshot-wound-to-the-neck-using-pipeline-embolization-device
#2
Mena Kerolus, Lee A Tan, Michael Chen
No abstract text is available yet for this article.
December 7, 2016: British Journal of Neurosurgery
https://www.readbyqxmd.com/read/27920845/the-great-imitator-igg4-periaortitis-masquerading-as-an-acute-aortic-syndrome-on-computed-tomographic-angiography
#3
Drew W Moore, Neil J Hansen, Dominick J DiMaio, William L Harrison
We present the case of a 52-year-old woman who presented to the emergency department with chest and neck pain. Initial cervical spine magnetic resonance imaging shows an abnormal flow void in the left vertebral artery, which prompted a computed tomographic angiogram. This demonstrated a hyperdense thickened ascending aortic wall, which extended into the great vessel origins. Clinically and radiographically interpreted as an acute aortic syndrome and/or intramural hematoma, the patient underwent ascending aortic repair with graft...
December 2016: Radiology case reports
https://www.readbyqxmd.com/read/27920207/vascular-angular-remodeling-by-kissing-y-stenting-in-wide-necked-intracranial-bifurcation-aneurysms
#4
Katharina Melber, Dan Meila, Philipp Draheim, Dominik Grieb, Björn Greling, Martin Schlunz-Hendann, Friedhelm Brassel
INTRODUCTION: Single stent deployment leads to a change in vascular geometry in wide necked bifurcation aneurysms. In some complex cases, the use of the single stent technique might not be sufficient or may not be feasible. The kissing-Y stenting technique appears to be an alternative endovascular treatment option. The aim of this study was to evaluate the effects of the kissing-Y stenting technique on vascular angular remodeling. METHODS: 21 patients with wide necked intracranial bifurcation aneurysms at different sites (10 anterior communicating artery, 6 middle cerebral artery, 3 basilar artery, 1 vertebral artery/posterior inferior cerebellar artery, 1 internal carotid artery/posterior communicating artery) were treated with 44 closed cell stents (follow-up 2012-2016) using the kissing-Y stenting technique...
December 5, 2016: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/27911229/c-2-arteriovenous-fistula-presenting-as-a-pathologic-hangman-s-fracture-case-report
#5
Rajeev D Sen, Carolina Gesteira Benjamin, Howard A Riina, Donato Pacione
The authors report on an 81-year-old woman with a pathologic hangman's fracture secondary to a complex arteriovenous fistula (AVF). The patient presented with severe, unremitting neck pain and was found to have fractures bilaterally through the pars interarticularis of C-2 with significant anterior subluxation of C-2 over C-3 along with widening of the left transverse foramen. Due to an abnormally appearing left vertebral artery (VA) on CT angiography, the patient underwent conventional angiography, which revealed a complex AVF stemming from the left VA at the level of C-2 with dilated posterior cervical veins and a large venous varix...
December 2, 2016: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/27909611/ultrasonographic-identification-of-the-thyrocervical-trunk-and-vertebral-artery-in-adults-to-decrease-complications
#6
Kenji Kayashima, Ryo Yamasaki
No abstract text is available yet for this article.
October 2016: Turkish Journal of Anaesthesiology and Reanimation
https://www.readbyqxmd.com/read/27906667/teaching-neuroimages-dynamic-vertebral-artery-insufficiency
#7
Alfred P See, Priyank Khandelwal, Nirav Patel, Mohammad Ali Aziz-Sultan
No abstract text is available yet for this article.
November 15, 2016: Neurology
https://www.readbyqxmd.com/read/27903481/hybrid-repair-of-complex-left-subclavian-artery-injury-with-partial-transection-and-complete-thrombosis-in-an-unstable-patient-following-blunt-trauma
#8
Ilitch Diaz-Gutierrez, Muhammad A Rana, Barkat Ali, John M Marek, Mark Langsfeld
Blunt subclavian artery injuries are rare and are associated with high morbidity and mortality. Several case reports have suggested that endovascular repair is safe with short operative times and minimal blood loss. We report a case of a 20-year-old male patient involved in a high speed motor vehicle collision that resulted in partial transection of left subclavian artery with complete luminal thrombosis. Patient also had a left main-stem bronchus avulsion along with major intra-abdominal injuries and multiple spine and long bone fractures...
November 26, 2016: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/27896540/variations-in-the-anatomy-of-the-vertebral-artery-cervical-loop-segment-a-potential-predisposing-factor-for-traumatic-basal-subarachnoid-hemorrhage
#9
Jonathan E Medcalf, C Paul Johnson, Azzam Taktak, Silke Grabherr
Fatal traumatic basal subarachnoid hemorrhage (TBSAH) is a characteristic forensic pathological entity, the investigation of which requires special techniques. In Liverpool, post-mortem room angiography is undertaken, followed by complete removal of the vertebral arteries and histological examination. It has been observed that the arterial anatomy can be highly variable, particularly the length and course of the loop segments located between the C2 vertebra and the dura. In a number of cases of TBSAH the loop segments of torn vessels have appeared relatively short...
November 29, 2016: Forensic Science, Medicine, and Pathology
https://www.readbyqxmd.com/read/27895243/contrast-less-stent-placement-for-vertebral-artery-origin-stenosis
#10
Shinzo Ota, Yoshinobu Sekihara, Takahiro Himeno, Yasue Tanaka, Tatsuya Ohtonari
We performed stent placement under intravascular ultrasound (IVUS), without the use of contrast medium, in a male patient in his 70s who had vertebral artery origin stenosis and decreased renal function. Satisfactory dilatation was achieved without complications, and the patient remained asymptomatic at 2 years of follow-up. We now report the details of this procedure. Stent placement under IVUS guidance may be useful in patients in whom contrast medium is contraindicated.
November 28, 2016: Interventional Neuroradiology
https://www.readbyqxmd.com/read/27891032/clinical-anatomy-and-significance-of-the-thoracic-intervertebral-foramen-a-cadaveric-study-and-review-of-the-literature
#11
Grigorios Gkasdaris, Grigorios Tripsianis, Konstantinos Kotopoulos, Stylianos Kapetanakis
INTRODUCTION: The literature is lacking information on the anatomy and the osseous dimensions of the thoracic intervertebral foramen (IVF). We describe the anatomy of the broader area, and we proceed with morphometric data of the vertebrae and the foramina. Depiction of these features is provided with imaging and illustrations. The purpose of this paper is to survey and present the anatomy of the foramen as a whole and provide baseline statistical data. MATERIALS AND METHODS: We review relevant literature, and we present data obtained from skeletal samples of known population and sex...
October 2016: Journal of Craniovertebral Junction and Spine
https://www.readbyqxmd.com/read/27891029/craniovertebral-junction-360%C3%A2-a-combined-microscopic-and-endoscopic-anatomical-study
#12
Sukhdeep Singh Jhawar, Maximiliano Nunez, Paolo Pacca, Daniel Seclen Voscoboinik, Huy Truong
OBJECTIVES: Craniovertebral junction (CVJ) can be approached from various corridors depending on the location and extent of disease. A three-dimensional understanding of anatomy of CVJ is paramount for safe surgery in this region. Aim of this cadaveric study is to elucidate combined microscopic and endoscopic anatomy of critical neurovascular structures in this area in relation to bony and muscular landmarks. MATERIALS AND METHODS: Eight fresh-frozen cadaveric heads injected with color silicon were used for this study...
October 2016: Journal of Craniovertebral Junction and Spine
https://www.readbyqxmd.com/read/27890763/positional-occlusion-of-vertebral-artery-due-to-cervical-spondylosis-as-rare-cause-of-wake-up-stroke-report-of-2-cases
#13
Hirofumi Nishikawa, Fumitaka Miya, Yotaro Kitano, Genshin Mori, Shigetoshi Shimizu, Hidenori Suzuki
BACKGROUND: Positional compression of the vertebral artery (VA) due to cervical spondylosis is an uncommon cause of stroke. We report two cases of cervical spondylosis causing wake-up stroke, which is extremely rare. CASE DESCRIPTION: The first case was a 78-year-old woman who presented with vertigo and vomiting lasting from waking up. Magnetic resonance (MR) images and angiography documented right cerebellar infarction, and stenosis of the right cervical VA. Dynamic angiography revealed that the right VA was occluded when her neck was extended or rotated to the right...
November 24, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27889285/aberrant-left-vertebral-artery-transposition-and-concomitant-carotid-subclavian-bypass-for-treatment-of-acute-intramural-hematoma-with-thoracic-endovascular-aortic-repair
#14
Sheila N Blumberg, Mark A Adelman, Thomas S Maldonado
Aberrant left vertebral artery (LVA) origin off the aortic arch is an uncommon anatomic variant. Treatment of the thoracic aortic pathology that necessitates its coverage has not been described. We present a patient with an acute intramural hematoma with a dominant LVA originating from the aortic arch. A LVA-to-carotid artery transposition with shunt placement, carotid-to-subclavian bypass, and thoracic endovascular aortic repair were performed. The patient recovered uneventfully, without any evidence of stroke...
November 23, 2016: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/27888081/bow-hunter-s-syndrome-from-a-tortuous-v1-segment-vertebral-artery-treated-with-stent-placement
#15
Rouzbeh Motiei-Langroudi, Christoph J Griessenauer, Abdulrahman Alturki, Nimer Adeeb, Ajith J Thomas, Christopher S Ogilvy
Bow Hunter's syndrome is a dynamic and reversible occlusion of the vertebral artery occurring after rotation or extension of the neck. The V3 segment is the most common site of compression, especially at the atlanto-axial joint. Surgical decompression with or without cervical fusion has been the mainstay of therapy and endovascular intervention such as placement of stents is rarely performed. We report a patient with Bow Hunter's Syndrome from tortuosity of the V1 segment of the VA treated with a self-expanding biliary stent placement...
November 22, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27880905/semaphorin-3g-provides-a-repulsive-guidance-cue-to-lymphatic-endothelial-cells-via-neuropilin-2-plexind1
#16
Xinyi Liu, Akiyoshi Uemura, Yoko Fukushima, Yutaka Yoshida, Masanori Hirashima
The vertebrate circulatory system is composed of closely related blood and lymphatic vessels. It has been shown that lymphatic vascular patterning is regulated by blood vessels during development, but its molecular mechanisms have not been fully elucidated. Here, we show that the artery-derived ligand semaphorin 3G (Sema3G) and the endothelial cell receptor PlexinD1 play a role in lymphatic vascular patterning. In mouse embryonic back skin, genetic inactivation of Sema3G or PlexinD1 results in abnormal artery-lymph alignment and reduced lymphatic vascular branching...
November 22, 2016: Cell Reports
https://www.readbyqxmd.com/read/27879507/pedicle-screw-combined-with-lateral-mass-screw-fixation-in-the-treatment-of-basilar-invagination-and-congenital-c2-c3-fusion
#17
Shenglin Wang, Chao Wang, Huijie Leng, Weidong Zhao, Ming Yan, Haitao Zhou
STUDY DESIGN: Clinical evaluation of a surgical fixation technique featuring combined use of pedicle screw and lateral mass screw (LMS). OBJECTIVE: Introduction of a novel technique for the treatment of congenital C2-C3 fusion and basilar invagination (BI). SUMMARY OF BACKGROUND: Posterior occipitocervical fixation using C2 pedicle screw was widely used for BI. However, in cases where BI is concurrent with congenital C2-C3 fusion, the C2 pedicles tend to be thinner than that in normal population and hence more likely to fail...
December 2016: Clinical Spine Surgery
https://www.readbyqxmd.com/read/27873124/carotid-and-vertebral-dissection-imaging
#18
REVIEW
Hakeem J Shakir, Jason M Davies, Hussain Shallwani, Adnan H Siddiqui, Elad I Levy
Carotid or vertebral artery dissection is the result of a tear in the vessel lining wherein the intima separates the media. This creates a false or pseudo lumen, often accompanied by hemorrhage into the arterial wall. Dissection of these craniocervical vessels often manifests with pain alone but, if untreated, may result in severe neurologic compromise. The causes of dissection are multifactorial, including spontaneous, iatrogenic, and traumatic insults. Regardless of etiology, treatment consists primarily of anticoagulation, whereas endovascular therapy is reserved for cases with persistent thrombus or flow limitation...
December 2016: Current Pain and Headache Reports
https://www.readbyqxmd.com/read/27867170/evaluation-of-appropriate-readout-sequence-for-renal-mri-perfusion-using-astar-asl-technique
#19
Kyoko Takakura, Aki Kido, Koji Fujimoto, Kayo Kiguchi, Yasutaka Fushimi, Naotaka Sakashita, Tokunori Kimura, Kaori Togashi
The aim of this study was to compare true-steady state free precession (True-SSFP) with fast field echo (FFE) as readout imaging sequences for renal arterial spin labeling (ASL), and to optimize the imaging condition. Renal ASL perfusion images were acquired using signal targeting with alternated radio frequency using asymmetric inversion slab (ASTAR) technique with respiratory triggering at 3T MRI system, using either 3D True-SSFP or FFE as the readout sequence. Inversion time (TI) varied from 800 to 2400 ms...
2016: Nihon Hoshasen Gijutsu Gakkai Zasshi
https://www.readbyqxmd.com/read/27866248/microanatomy-of-the-brachial-plexus-roots-and-its-clinical-significance
#20
Li-Yuan Zhong, Ai-Ping Wang, Li Hong, Sheng-Hua Chen, Xian-Qin Wang, Yun-Cheng Lv, Tian-Hong Peng
PURPOSE: To provide the anatomical basis of brachial plexus roots for the diagnosis and treatment of brachial plexus root avulsion injury. METHODS: The morphological features of brachial plexus roots were observed and measured on 15 cervicothoracic spine of adult cadavers. The relationship of brachial plexus nerve roots and the surrounding tissues also were observed, as well as the blood supply of anterior and posterior roots of the brachial plexus. RESULTS: Origination of the nerve roots in the dorsal-ventral direction from the midline was fine-tuned at each level along the spinal cord...
November 19, 2016: Surgical and Radiologic Anatomy: SRA
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