Endovascular Treatment May Be Effective in Preventing Recurrence of Ischemic Stroke in Vertebral Artery Stump Syndrome: A Case Series.

Vertebral artery stump syndrome (VASS) is a rare condition that can cause posterior circulation ischemic stroke due to occlusion of the ipsilateral vertebral artery (VA) orifice, resulting in blood flow stagnation and embolus formation. Although there is no established treatment for this condition, we observed 3 cases of VASS out of 326 acute ischemic stroke cases at a single institution from April 2021 to October 2022. Despite the best possible antithrombotic treatment, all 3 patients had recurrent ischemic strokes.

Aspect Ratio Is Associated with Recanalization after Coiling of Unruptured Intracranial Aneurysms.

The rate of recanalization after coil embolization for unruptured intracranial aneurysms (UIAs) is reported to occur around 11.3%-49%. This study aims to investigate the factors that influence the recanalization after coil embolization for UIAs in our institution.

Usefulness of Craniograms in Discriminating Coiled Intracranial Aneurysms Requiring Retreatment.

While endovascular coil embolization has become one of the major therapeutic modalities for intracranial aneurysms, long-term imaging follow-up is required because of the higher rate of retreatment compared with surgical clipping. The purpose of this study was to show the usefulness of craniograms to discriminate coiled intracranial aneurysms that required retreatment. Under the study protocol approved by institutional review board, a retrospective review of the medical record was done regarding coil embolization for intracranial aneurysms performed between January 2014 and December 2018.

Outcome of Endovascular Therapy Aiming for Single-session Obliteration of Intracranial Dural Arteriovenous Fistulas.

The goal of dural arteriovenous fistula (dAVF) treatment is obliteration of the arteriovenous shunt and/or retrograde leptomeningeal venous drainage (RLVD). Single-session obliteration could improve symptoms early and reduce risk of neurological sequelae. This study investigated the efficacy and adverse events of endovascular therapy (EVT) aiming for single-session obliteration in dAVF treatment.

Clinical Outcome of Elderly Patients with Subarachnoid Hemorrhage: Validation of Modality Assignment Based on Aneurysmal Morphology and Location.

Background: The number of elderly patients with subarachnoid hemorrhage is increasing. Elderly patients have been postulated to benefit more from endovascular coiling, compared with neurosurgical clipping. However, we based our therapeutic modality on the morphology and location of the aneurysms, rather than patients' age or their World Federation of Neurological Surgeons grade.

A Case of Internal Carotid Artery Dissection with Ischemic Onset, Followed by Subarachnoid Hemorrhage during Diagnostic Angiography.

Objective: Internal carotid artery (ICA) dissection is known to cause binary types of stroke, cerebral infarction, and subarachnoid hemorrhage (SAH). However, it is rare that these two pathologies take place in a clinical scenario. We report a case of ICA dissection with ischemic onset, which was followed by SAH on the same day during diagnostic angiography.

Spontaneous Persistent Primitive Trigeminal Artery-Cavernous Sinus Fistula Successfully Treated by Multipronged Coil Embolization: Case Report and Literature Review.

Background: A spontaneous persistent primitive trigeminal artery-cavernous sinus fistula (PCF) is extremely rare. Until recently, endovascular treatment for PCF involving transarterial and/or transvenous coil embolization of the cavernous sinus (with/without the persistent trigeminal artery) was commonly performed. However, it may result in remaining shunt flow or exacerbation of cranial nerve palsy.

Evaluation and management of plaque protrusion or thrombus following carotid artery stenting.

Carotid artery stenting (CAS) has become a common treatment for carotid artery stenosis. However, complications, such as an ischemic event, can occur with CAS during intra- and post-operative periods. Among these ischemic complications, plaque protrusion into the stent and thrombus on the stent have occurred after CAS.