Journal of neurosurgery
-
Journal of neurosurgery · Dec 2024
Comparative analysis of intraoperative MRI and early postoperative MRI findings in glioma surgery patients.
The extent of resection (EOR) is an important prognostic factor for both low- and high-grade gliomas. Intraoperative MRI (iMRI) has been used to increase the EOR in glioma surgery. While a recent study reported differences between iMRI and early postoperative MRI (epMRI), their specific relationship to postoperative clinical symptoms remains unclear. This study aims to compare the differences between iMRI and epMRI in glioma surgery. ⋯ Overall, iMRI demonstrated more accurate EOR and less SICE compared with epMRI. Although the positive rate of DWI abnormality was lower on iMRI than on epMRI, the late-developing group showed no postoperative neurological deficits. Therefore, iMRI is more useful in assessing accurate EOR and detecting postoperative neurological deficits than epMRI.
-
Journal of neurosurgery · Dec 2024
Early radiological reduction of periventricular anastomosis after direct bypass surgery for adult moyamoya disease.
Periventricular anastomosis (PA), a recently recognized cause of hemorrhage in moyamoya disease, is reducible after bypass surgery. The timing of the reduction, however, remains poorly understood. The objectives of the present study were to demonstrate radiological reduction of PA occurring within 48 hours after surgery and to identify factors associated with reduction. ⋯ PA could be reduced within 48 hours after direct bypass surgery, suggesting an early preventive effect against hemorrhage. Early reduction, a potential predictor for late-phase reduction, might be promoted by targeted bypass surgery.
-
Journal of neurosurgery · Dec 2024
Impact of smoking on the detection of brain aneurysms in general population screening: a systematic review and meta-analysis.
While the relationship between smoking and subarachnoid hemorrhage is well established, data regarding the probability of detecting unruptured intracranial aneurysms (UIAs) in smokers remain sparse. The aim of this systematic review and meta-analysis is to provide a comprehensive understanding of the relationship between smoking and the likelihood of identifying UIAs in healthy asymptomatic patients who underwent brain imaging for indications unrelated to UIAs. ⋯ This study suggests a potentially higher risk of UIAs in patients who smoked than in those who never smoked. However, the results of this meta-analysis revealed that smoking was not statistically associated with higher UIA detection. This result could be explained by the limited number of studies published on this topic. If these findings reach statistical significance in future larger studies, it could justify revising guidelines to include cigarette smokers in intracranial aneurysm screening.
-
Journal of neurosurgery · Dec 2024
Investigation of predictors of latent visual impairment in patients with sellar lesions.
Patients with sellar lesions compressing the optic nerve sometimes perceive visual improvement after lesion resection, despite the absence of visual impairment on preoperative ophthalmological examination. This study investigated the indicators of latent visual impairment in patients with sellar lesions. ⋯ Angle assessment of optic nerve bending due to compression caused by sellar lesions on the sagittal image may be useful in identifying sellar lesions with latent visual impairment.