Prediction of Cerebral Hyperperfusion Syndrome After Combined Bypass Surgery in Moyamoya Disease Using Hemodynamic and Clinical Data.

Purpose: Cerebral hyperperfusion syndrome (CHS) is a postoperative complication in moyamoya disease (MMD). However, limited studies have investigated the association between preoperative hemodynamic features and postoperative CHS. In this study, we aimed to identify the predictors of postoperative CHS in MMD using preoperative hemodynamic and clinical data.

Intra-individual comparison of long-term outcomes between combined and indirect bypass surgery in adult moyamoya disease.

Purpose: Bypass surgery is regarded as the standard treatment option for symptomatic and hemodynamically unstable moyamoya disease (MMD). However, there is ongoing debate about the most effective type of bypass surgery. We aimed to analyze the long-term outcomes of combined and indirect bypasses for MMD patients through intra-individual comparisons.

Surgical Outcomes of Low-Flow Bypass Surgery in Intracranial Atherosclerotic Steno-Occlusive Diseases.

Background And Objectives: The role of bypass surgery in intracranial atherosclerotic steno-occlusive diseases (ICADs) remains controversial. We aimed to analyze the surgical outcomes of bypass surgery in patients with the ICADs in a single tertiary institution.

Methods: Among 1018 cases of low-flow bypass surgery between 2003 and 2022, 215 patients with the ICAD refractory to medical treatment were finally enrolled in this study.

Natural course of hemodynamically stable hemispheres contralateral to operated hemispheres in adult patients with ischemic moyamoya diseases.

The necessity of bilateral bypass in adult moyamoya disease (MMD) remains unclear despite its recommendation for pediatric and hemorrhagic cases. We aimed to investigate the natural course of hemodynamically stable unoperated hemispheres after bypass surgery for symptomatic and hemodynamically unstable hemispheres in adult patients with ischemic MMD. Among 288 patients, the mean age at the first operation of the unstable hemispheres was 40.

Surgical Thrombectomy for Extensive Cerebral Venous Sinus Thrombosis after COVID-19 Vaccination : A Novel Surgical Technique and Literature Review.

Surgical treatment of refractory and extensive cerebral venous sinus thrombosis (CVST) has limited applications. Here, we describe an open, direct sinus thrombectomy in the early phase of extensive CVST. A 49-year-old man with extensive CVST that occurred after the coronavirus disease 2019 (COVID-19) vaccination and affected the drainage of the Labbé vein presented with clinical deterioration and left temporal hemorrhagic infarction.

Clinical significance of "periventricular collateral enhancement sign" in symptomatic moyamoya disease: A vessel wall imaging study.

Background: Periventricular collaterals are associated with high risk of hemorrhagic stroke in adult moyamoya disease (MMD). However, the clinical significance of the periventricular collateral enhancement sign (PCES), which indicates wall enhancement of periventricular collaterals on contrast-enhanced vessel wall imaging (VWI), has yet to be determined.

Methods: Thirty-seven patients with MMD with acute neurological symptoms were consecutively recruited.

Can Trigeminal Schwannoma-Related Symptoms be Controlled With Gamma Knife Radiosurgery?

Objective: The effectiveness of gamma knife radiosurgery (GKRS) for the management of trigeminal schwannomas (TS) has been established. Although GKRS has been shown to inhibit tumor growth, the effect of GKRS on the symptoms caused by TS has not been sufficiently studied. In this study, symptomatic changes following GKRS for the management of symptomatic TS were investigated using long-term follow-up results.