Carotid Artery Stenting for Near Occlusion with Full Collapse.

Objective: Carotid near occlusions show a lower risk of stroke than other types of severe stenosis. However, emerging evidence suggests that near occlusion with full collapse differs from that without full collapse. The results of treatment with carotid artery stenting for near occlusion with full collapse are presented.

Initial Experience of Coil Embolization for Unruptured Intracranial Aneurysm Combined with Neuroform Atlas and Undersized Flexible Coils.

Objective: Intraprocedural rupture (IPR) is a rare complication that can occur during endovascular treatment (EVT) of unruptured intracranial aneurysms (UIAs). However, it leads to high morbidity and mortality rates. Others have showed that coil flexibility is a risk factor for IPR.

Carotid Artery Stenting Using a Closed-Cell Stent-in-Stent Technique for Unstable Plaque.

To examine whether carotid artery stenting (CAS) of stenoses with unstable plaque using a closed-cell stent-in-stent technique prevents plaque protrusion. Between December 2014 and August 2018, 35 consecutive patients (mean age 75.8 years; 29 men) with carotid artery stenosis (20 symptomatic) and unstable plaque diagnosed by magnetic resonance imaging were prospectively analyzed.

Carotid Artery Stenting: Investigation of Plaque Protrusion Incidence and Prognosis.

Objectives: This study sought to clarify the incidence and prognosis of PP in carotid artery stenting (CAS).

Background: Projections thought to be plaque may be observed inside the stent on angiography or intravascular ultrasound (IVUS) during CAS. Known as plaque protrusion (PP), the incidence and prognosis of this complication are unclear.

Stent Placement for Severe Stenosis of the Left Common Carotid Artery with Internal-to-External Carotid Steal.

We report the case of a 64-year-old male with internal carotid artery (ICA)-to-external carotid artery (ECA) steal due to severe stenosis of the common carotid artery (CCA). Left CCA occlusion was initially diagnosed on 3-dimensional time-of-flight magnetic resonance angiography, but digital subtraction angiography revealed severe stenosis of the left CCA and retrograde flow through the left ICA feeding the left ECA. Diverted blood flow from ECA to ICA in cases with occlusion or severe stenosis of the CCA represents a well-known alternative collateral flow pattern called ECA-to-ICA steal.

Carotid Wallstent placement difficulties encountered in carotid artery stenting.

Purpose: The present study aimed to identify the types of curved lesions that are difficult to place Carotid Wallstent (CWS).

Materials And Methods: The study targeted 31 consecutive carotid artery (CA) stenosis underwent carotid artery stenting using CWS. CWS placement success rate, stenosis location, lesion tortuosity, and relationship with stent placement failures were investigated.

Usefulness of contrast-enhanced magnetic resonance angiography for follow-up of coil embolization with the enterprise stent for cerebral aneurysms.

Objective: The aim of this study was to determine the feasibility and usefulness of contrast-enhanced magnetic resonance angiography (CE-MRA) and 3-dimensional (3D) time-of-flight (TOF) MRA for follow-up of intracranial aneurysms treated using the Enterprise stent.

Methods: Five aneurysm cases using the Enterprise stent were prospectively analyzed and were followed up with CE-MRA, 3D TOF MRA, and digital subtraction angiography (DSA). Depictions of parent artery lumen and the aneurysm neck with 3D TOF MRA and CE-MRA were compared with those of DSA.

Hemifacial spasm due to contralateral aneurysmal compression of the facial nerve successfully treated with endovascular coil embolization: case report.

Background And Importance: Hemifacial spasm is usually caused by compression of the facial nerve at the root exit zone (REZ), whereas fusiform aneurysmal compression is extremely rare. The authors describe symptomatic hemifacial spasm caused by a contralateral fusiform aneurysm of the vertebral artery (VA) that was treated by endovascular coil embolization.

Clinical Presentation: A 55-year-old woman developed left hemifacial spasm that had gradually worsened over a period of 2 years before admission to our hospital.

Initial experience of carotid artery stenting using the Carotid WALLSTENT and FilterWire EZ in Japan.

Purpose: The Carotid WALLSTENT (CWS) and Filter-Wire EZ (FWEZ) embolic protection devices for use in carotid arterial stenting (CAS) were newly approved for national health insurance coverage in Japan in April 2010. This article describes our initial experience of CAS using the CWS and FWEZ.

Material And Methods: A group of 14 patients (12 men, 2 women; mean age 70.

Hyponatremia is predictable in patients with aneurysmal subarachnoid hemorrhage--clinical significance of serum atrial natriuretic peptide.

Purpose: Serum atrial natriuretic peptide (ANP) that is elevated after aneurysmal subarachnoid hemorrhage (SAH) causes diuresis and natriuresis (cerebral salt wasting) and might exacerbate delayed ischemic neurological deficit (DIND). We investigated relationships among hyponatremia, serum ANP elevation, and the onset of DIND after SAH.

Materials And Methods: Thirty-nine consecutive patients (15 women and 24 men) with SAH were assigned to a normonatremia group or a group that developed hyponatremia after SAH.

Virtual surgical planning for superficial temporal artery to middle cerebral artery bypass using three-dimensional digital subtraction angiography.

Objective: To introduce reliable and minimally invasive virtual surgical planning for superficial temporal artery to middle cerebral artery (STA-MCA) bypass surgery using three-dimensional (3-D) rotational reconstruction digital subtraction angiography (DSA).

Methods: Twenty-eight consecutive patients (11 women and 17 men) with cerebrovascular insufficiency due to internal carotid artery (ICA) or middle cerebral artery (MCA) occlusion (n = 16), ICA or MCA stenosis (n = 6), and moyamoya or moyamoya-like disease (n = 6) underwent rotational DSA. Anatomical locations of the appropriate donor branch of the STA, the most suitable recipient of MCA and squamous sutures on the skull surface, were visualized using 3-D reconstruction imaging.

[Increased urinary sodium excretion in the early phase of aneurysmal subarachnoid hemorrhage as a predictor of cerebral salt wasting syndrome].

Cerebral salt wasting syndrome (CSWS) in patients with aneurysmal subarachnoid hemorrhage (SAH) is considered to correlate with delayed ischemic neurological deficits (DIND) induced by cerebral vasospasm; however, its exact mechanism is still not well-known. The purpose of the present study is to evaluate the relationship between hyponatremia caused by CSWS and the increase of the urinary sodium excretion in early phase following SAH. Fifty-four patients with SAH were divided into 2 groups, normonatremia group and hyponatremia group which suffered hyponatremia after SAH.

Initial experience of using the filter protection device during carotid artery stenting in Japan.

Purpose: No filter protection devices for carotid artery stenting (CAS) have been formally approved for use in Japan; however, as of April 2008, the Angioguard XP (AGXP) was approved. This article describes our initial results using the AGXP during CAS for the treatment of carotid artery stenosis.

Material And Methods: A group of 15 patients (14 men) with a mean age of 72.

Multiple cerebral aneurysms associated with Takayasu arteritis successfully treated with coil embolization.

The cerebrovascular complications of Takayasu arteritis are primarily related to the presence of occlusive lesions. Cerebral aneurysms rarely occur as complications; only 18 cases have been reported thus far. The use of coil embolization to treat cerebral aneurysms occurring as a complication of Takayasu arteritis has not been previously reported.

Successful percutaneous transluminal angioplasty and stenting for symptomatic intracranial vertebral artery stenosis using intravascular ultrasound virtual histology.

This is the first report of percutaneous transluminal angioplasty (PTA) of an intracranial artery applying intravascular ultrasound virtual histology (IVUS-VH), which has been recently developed for tissue characterization of coronary artery plaque. We report a case of successful PTA and stenting for symptomatic intracranial vertebral artery stenosis using IVUS-VH.

Pathogenesis of intraparenchymal epidermoid cyst in the brain: a case report and review of the literature.

Background: Intracranial epidermoid cysts are relatively common; however, epidermoid cysts in the brain parenchyma are rare. In addition, the etiology of intraparenchymal epidermoid cysts is not clear.

Case Description: A 61-year-old woman presented with convulsive seizures.