Pediatric Donut-Shaped Basilar Artery Aneurysm.

Intracranial aneurysms are uncommon in the pediatric population. We present a case of an 11-year-old boy presenting with subarachnoid hemorrhage caused by a "donut-shaped" basilar tip aneurysm. It occurs when the flow geometry produces a circumferential laminar flow into the aneurysmal sac, resulting in a central thrombosis.

Development and validation of a novel scoring system for acute ischemic stroke.

Background: This study aimed to assess the clinical application of the Artery Occlusion Image Score (AOIS), a new metric based on computed tomographic angiography (CTA) that reflects the severity of occlusive changes in the main intracranial arteries.

Materials And Methods: Patients diagnosed with acute ischemic stroke (AIS) were divided into three groups: anterior circulation infarcts (ACI group), posterior circulation infarcts (PCI group), and both anterior and posterior circulation infarcts (ACI + PCI group). The sensitivity and specificity of AOIS were evaluated using the Basilar Artery on Computed Tomography Angiography (BATMAN) score, the Clot Burden Score (CBS), and the National Institutes of Health Stroke Scale (NIHSS) as comparators through receiver-operating characteristic (ROC) curve analysis.

Endovascular Treatment of Symptomatic Basilar Artery Stenosis.

Purpose: While symptomatic basilar artery (BA) stenosis is associated with a higher risk of recurrent stroke or death, there is no consensus on the management of these patients who are refractory to antiplatelet therapy. This study retrospectively assesses the outcomes of endovascular treatment (EVT) for symptomatic BA stenosis.

Materials And Methods: We conducted a retrospective review of patients with symptomatic BA stenosis who underwent EVT, including angioplasty or stenting, from 2006 to 2018.

A case report of reversible cerebral vasoconstriction syndrome with thunderclap headache significantly exacerbated in the supine position and alleviated in the standing position.

Background: Reversible cerebral vasoconstriction syndrome (RCVS) is characterized by sudden onset thunderclap headache and multiple segmental reversible cerebral vasoconstrictions that improve within 3 months. The postpartum period is a well-known precipitating factor for the onset of RCVS. Cerebral venous thrombosis (CVT) causes thunderclap headaches in the postpartum period.

Partially thrombosed giant basilar artery aneurysm with attenuated contrast enhancement of the intraluminal thrombus on vessel wall MRI after flow diversion treatment: illustrative case.

Background: The effect of vessel wall magnetic resonance imaging (VW-MRI) enhancement in partially thrombosed aneurysms has previously indicated aneurysmal instability and a rupture risk. However, whether the contrast effect of the wall changes before or after flow diversion treatment is still under investigation.

Observations: The authors report a case of a partially thrombosed basilar artery aneurysm that increased in size over a short period, worsened brainstem compression symptoms, and was treated with a flow diverter stent with good results.

Quadriparesis with different diagnoses after COVID-19 vaccination: Case series and literature review.

Following vaccination with adenoviral vector-based ChAdOx1 nCoV-19, serious neurological adverse events have been reported. Here we report two cases who presented with quadriparesis following the adenoviral vector-based ChAdOx1 nCoV-19 vaccine. A 55-year-old male patient presented with quadriparesis after 8 days of the second dose of ChAdOx1 nCoV-19 vaccination.

Improving the Reachability of Contact Aspiration for Acute Ischemic Stroke Using a New Delivery Assist Catheter.

Objective: This study aimed to improve the reachability of large lumen catheter for contact aspiration during acute ischemic stroke by a new delivery assist catheter.

Methods: This study included 58 patients with large-vessel stroke treated using endovascular procedures at our institution and affiliated hospitals between July 2021 and January 2023. Contact aspiration, especially contact aspiration using nonpenetrating of thrombus (CANP) technique, was adopted as first-line thrombectomy for localized internal carotid artery, middle cerebral artery proximal (M1 segment), and basilar artery without tandem occlusion in acute stroke.

Deep venous thrombosis post mechanical thrombectomy in acute ischaemic stroke.

A woman in her 20s presented with neck pain, slurred speech and left-sided weakness. She successfully underwent mechanical thrombectomy (MT) for total occlusion of the basilar artery and made full neurological recovery. Initial ultrasound Doppler of legs (USDL) did not show any deep vein thrombosis (DVT).

Double-Interposition Bypass: Technical Case Report of a Novel Intraoperative Bypass Salvage Technique.

Background And Importance: Complex cerebrovascular bypass operations may confer an increased risk of intraoperative complications, such as graft thrombosis. Novel techniques are needed to optimize the management of these challenging cases.

Clinical Presentation: A woman in her late 20s was incidentally diagnosed with a 1.

Flow diversion for the treatment of intracranial bifurcation aneurysms: a systematic review and meta-analysis.

Background: Flow diversion (FD: flow diversion, flow diverter) is an endovascular treatment for many intracranial aneurysm types; however, limited reports have explored the use of FDs in bifurcation aneurysm management. We analyzed the safety and efficacy of FD for the management of intracranial bifurcation aneurysms.

Methods: A systematic review identified original research articles that used FD for treating intracranial bifurcation aneurysms.

Flow Redirection Endoluminal Device Flow Diverter Placement for Recurrent Dolichoectatic Vertebrobasilar Artery Aneurysm Treated with Multiple Low-Profile Visualized Intraluminal Support Stents: A Case Study.

Objective: We report a case of dolichoectatic vertebrobasilar aneurysms treated with multiple low-profile visualized intraluminal support (LVIS) stents followed by flow redirection endoluminal device (FRED) flow diverter to prevent the growth of the thrombosed aneurysm.

Case Presentation: A 71-year-old man developed diplopia due to oculomotor nerve palsy after 11 years of follow-up for an enlarging thrombosed dolichoectatic vertebrobasilar artery aneurysm. He initially had a fusiform thrombosed aneurysm from the right vertebral artery to the basilar artery.

Hemodynamic outcomes of stenting for vertebrobasilar insufficiency in patients with a low flow state.

Introduction: The Vertebrobasilar Flow Evaluation and Risk of Transient Ischemic Attack and Stroke (VERiTAS) study determined patients with low flow in their vertebrobasilar (VB) system are at increased risk of recurrent stroke. Endovascular interventions such as angioplasty and stenting are reserved for patients with refractory symptoms; however, few series to date have demonstrated either hemodynamic or clinical outcomes in this high-risk patient group. We present our combined institutional series of patients with symptomatic VB atherosclerotic disease and low-flow state who underwent angioplasty and stenting.

Human Basilar Arterial Plaque Detected by Near-Infrared Spectroscopy: Clinical Image.

A patient in their 70s presented with weakness of the left limb and aphasia. Left vertebral angiography showed acute basilar artery occlusion. After mechanical thrombectomy, basilar artery trunk stenosis was evident and catheter-based near-infrared spectroscopy (NIRS) showed lipid-rich atherosclerotic plaque extending to almost 220° of the vessel circumference in the culprit lesion.

Congenital and acquired anomalies of the basilar artery: A pictorial essay.

Introduction: The basilar artery is one of the two cases in our body where an arterial vessel is formed by the union of two others - the vertebral arteries. It provides vascular supply to essential structures for the main vital functions; the posterior cerebral arteries originate from it as terminal branches, and form part of the anastomotic circle of Willis.

Imaging Findings: Congenital and acquired anomalies of the basilar trunk are described.

Fulminant Extra- And Intracranial Arteriovenous Thrombosis And Non-aneurysmal Subarachnoid Hemorrhage Following COVID-19 Infection.

Purpose: Coronavirus disease of 2019 (COVID-19) is associated with increased risk of stroke and intracranial hemorrhage. This first report of fulminant panvascular arteriovenous thrombosis with subarachnoid hemorrhage (SAH) in a post-COVID-19 infection is attributed to extensive arteriovenous inflammation leading to arterial rupture following vasculitis.

Case Report: We report a rare case of extensive extra- and intra-cranial cerebral arteriovenous thrombosis following COVID-19 infection, presenting as fatal non-aneurysmal subarachnoid hemorrhage.

The charlotte large artery occlusion endovascular therapy outcome score compares favorably to the critical area perfusion score for prognostication before basilar thrombectomy.

Introduction: The Critical Area Perfusion Score (CAPS) predicts functional outcomes in vertebrobasilar thrombectomy patients based on computed tomography perfusion (CTP) hypoperfusion. We compared CAPS to the clinical-radiographic Charlotte Large artery occlusion Endovascular therapy Outcome Score (CLEOS).

Methods: Acute basilar thrombosis patients from January 2017-December 2021 were included in this retrospective analysis from a health system's stroke registry.

A case of acute basilar artery occlusion due to atherosclerotic disease revascularized by drug-coated balloon dilation.

Acute basilar artery occlusion (ABAO) accounts for 1% of all ischemic stroke cases, but has a high rate of severe complications and mortality (75-91%). Intracranial atherosclerosis is an significant cause of ischemic stroke. Revascularization using stents has shown good efficacy.

Posterior Circulation Stroke Secondary to Basilar Artery Thrombosis With a Fatal Outcome.

Stroke is a regularly encountered emergency by emergency physicians, categorized based on the culprit artery and diagnosed based on non-contrast computerized tomography (CT) brain, which is supported by clinical examination that can be treated intravenously by thrombolytic agents or mechanical thrombectomy. Here we present one such case, which was brought to the emergency room with symptoms of posterior circulation stroke within 8 hours and underwent mechanical thrombectomy.

Growth of Flow-Related Aneurysms Following Occlusion of Cerebral Arteriovenous Malformation.

Background:  Flow-related aneurysms (FRAs) associated with cerebral arteriovenous malformations (AVMs) pose a significant therapeutic challenge. Both their natural history and management strategy are still unclear and underreported. FRAs generally increase the risk of brain hemorrhage.