Minimally invasive craniotomy for putaminal hemorrhage using a tubular retractor: A technical note.

Background: Minimally invasive endoscopic and stereotactic surgery have been established as surgical treatments for putaminal hemorrhage. However, facilities that do not have equipment for endoscopic or stereotactic surgery will likely have to perform conventional craniotomy. Using a tubular retractor, we were able to perform minimally invasive surgery, such as endoscopic surgery.

Cavernous sinus dural arteriovenous fistula treated with transvenous embolization through facial vein: A case report.

Background: Although the inferior petrosal sinus (IPS) is the most common approach route for transvenous embolization (TVE) of cavernous sinus dural arteriovenous fistulas (CSDAVFs), other routes should be chosen in cases which the IPS is occluded. We report a case in which the superior ophthalmic vein (SOV) approach through the facial vein (FV) was the first choice to achieve radical cure of a hemorrhage-onset CSDAVF.

Case Description: An 81-year-old female presented with a history of transarterial embolization (TAE) and TVE for the left CSDAVF 27 years ago.

Usefulness and problems of Y-Stent and T-Stent assisted coiling for unruptured cerebral aneurysms.

Introduction: We are going to discuss about usefulness and problems of Y-stent and T-stent assisted coiling for unruptured cerebral aneurysms.

Methods: A retrospective review was performed to identify patients who were treated using Y-stent or T-stent assisted coiling (Y-SAC, T-SAC) for 25 unruptured cerebral aneurysms from April 2017 to September 2021. Fifteen cases were treated using Y-SAC, 10 were done using T-SAC.

Successful use of an LVIS device to treat unruptured distal aneurysm of the superior cerebellar artery at a vascular bifurcation.

Background: Aneurysms of the distal superior cerebellar artery (SCA) account for only a small proportion of all cerebral aneurysms. Reports of the use of flow diverters (FDs) started to appear in 2013. We obtained good results from placement of a low-profile visualized intraluminal support device (LVIS) to treat unruptured distal aneurysm of the SCA at a vascular bifurcation.

Usefulness of endoscope-assisted surgery under exoscopic view in skull base surgery: A technical note.

Background: The use of the exoscope has been increasing in the field of neurosurgery, as it can set the visual axis freely, enabling the surgeon to operate in a comfortable posture. Although endoscope-assisted surgery for compensation of insufficient surgical field is useful under the microscope, we report that using an endoscope in exoscopic surgery is safer and more useful.

Methods: The exoscope used was ORBEYE.