Publications by authors named "Hiromichi Hayami"
Background: Extracranial carotid artery aneurysms (ECAAs) are rare, and treatment guidelines are lacking. Few reports on endovascular treatments performed for ECAAs exist.
Observations: A 73-year-old woman with a left giant cervical internal carotid artery aneurysm was treated with overlapping closed-cell stents.
Article Synopsis
- * The authors utilized augmented reality (AR) technology, which allowed for precise navigation during the procedure by aligning a reference array with surgical instruments for accurate placement of the SS shunt tube.
- * The use of AR resulted in minimal incisions and bone removal, making it advantageous for surgeries involving upper thoracic regions and small syrinx formations.
Article Synopsis
- - Eagle jugular syndrome (EJS) is linked to cerebrovascular disease caused by obstruction from an elongated styloid process, and this study investigates its potential relationship with de novo cerebral cavernous malformation (CCM) through a literature review from 1995 to 2023.
- - The review identified 14 EJS patients, with most showing increased intracranial hypertension, while 30 patients with de novo CCM developed their conditions often following complications like developmental venous anomalies and dural sinus thrombosis.
- - The findings suggest that venous congestion resulting from EJS may trigger the formation of de novo CCM, indicating EJS might serve as a warning sign for future CCM development, necessitating further research on their connection.
Introduction: In facial motor-evoked potential monitoring, efforts to reduce peripheral stimulation are necessary because it can cause false-negatives. The effects of peripheral stimulation on Cz-C3/C4 and C3-C4 montages were compared.
Methods: Facial motor-evoked potentials were recorded from bilateral orbicularis oculi (Oculi) and oris (Oris) muscles.
We report a case in which neointima was confirmed by angioscopy and antiplatelet drug administration was reduced 2 months after carotid artery stenting (CAS). A patient in their 80s was scheduled to undergo resection for renal cancer; however, he also had right cervical internal carotid artery stenosis. Because this was a risk for general anesthesia, CAS was performed after first starting dual antiplatelet therapy.
View Article and Find Full Text PDFBackground: Compared with several reports of cerebral vasospasm after clipping for unruptured cerebral aneurysm, only one study to date has reported cerebral vasospasm after coil embolization. Herein, the authors report a rare case of cerebral vasospasm after coil embolization for unruptured cerebral aneurysm.
Observations: A 58-year-old woman with an unruptured anterior communicating artery aneurysm was referred to our department.
Background: Transvenous embolization (TVE) for dural arteriovenous fistula (DAVF) is difficult depending on an accessible route. Reported herein is a case of transvenous embolization using a balloon and a coil as "walls." .
View Article and Find Full Text PDFObjective: We report two patients with unruptured large aneurysms treated by overlapping stent-assisted coil embolization using low-profile visualized intraluminal support (LVIS) stents.
Case Presentation: Case 1: An 80-year-old woman presented with abducens nerve palsy due to an internal carotid artery aneurysm. Case 2: A 75-year-old man presented with a partially thrombosed fusiform aneurysm in the vertebral artery (VA).