World Neurosurg
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The primary goals of glioma surgery are maximal tumor resection and preservation of brain function. Intraoperative motor-evoked potential (MEP) monitoring is commonly used to predict and minimize postoperative paralysis. However, studies on intraoperative MEP trends and postoperative paralysis are scarce. This study aimed to determine the relationship between intraoperative MEP trends and postoperative paralysis. ⋯ The overall intraoperative MEP trend can reflect the risk of postoperative paralysis during glioma surgery. Thus, visualizing this trend can provide a better understanding of the prognosis of postoperative paralysis.
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Obtaining a definitive pathological diagnosis from brain tissue sampling was challenging due to the small, nonrepresentative sample. This study introduced a novel syringe technique for brain biopsy aimed at enhancing diagnostic accuracy by obtaining core tissue samples that better represent the targeted tissue. ⋯ The preliminary findings suggest that the syringe technique is both safe and effective for obtaining substantial volumes of brain tissue, facilitating accurate pathological evaluation in cases of complex neurological disorders.
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A rare presentation of unilateral carotid rete mirabile (RM) in a 70-year-old male manifesting as limb-shaking transient ischemic attacks, a disorder typically associated with carotid artery stenosis. The patient experienced recurrent left-sided limb shaking and numbness, with angiography revealing an anomalous microarterial collateral network replacing the right internal carotid artery's cavernous segment, indicative of RM. ⋯ The patient's management involved antiplatelet therapy and lifestyle changes, following which he reported no further cerebrovascular events. This case underscores the importance of considering RM in differential diagnoses of limb-shaking transient ischemic attack and suggests conservative management as a favorable approach.
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Diffuse low-grade gliomas are rare brain tumors transforming to higher grade even with surgery, chemotherapy, and radiotherapy. Their preferential infiltration of white matter tracts, beyond tumor boundaries on fluid-attenuated inversion recovery (FLAIR), make difficult to plan focal treatment such as surgery or radiotherapy and monitor response to chemotherapy. Diffusion tensor imaging (DTI) might reflect this infiltration of white matter tracts. The aim of our study is to assess how DTI signal in the peritumoral zone might be modified before FLAIR tumor progression appears at 1-year follow-up. ⋯ This study shows pre-existing DTI signal abnormalities in regions with tumor progression at 1 year. Such abnormalities could correspond to a tumor infiltration not yet visible on FLAIR. This might be helpful to predict tumor progression and allow to adapt the therapeutic strategy.
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Occipital lobectomy is a widely accepted procedure for treatment of occipital gliomas and occipital lobe epilepsy,1,2 but its technical nuances are not well discussed. Anatomically, the occipital lobe, also known as the cuneus or visual area, is an isolated region in terms of vascular supply. The terminal branches of posterior cerebral arteries, including parieto-occipital and calcarine arteries,3-6 are the major vessels supplying this region. ⋯ The surgical procedure involved the dissection of the entire POF along with the parieto-occipital artery and early coagulation of the calcarine artery (Video 1). Postoperative magnetic resonance imaging confirmed the occipital lobectomy with the POF as the anterior border of the resection cavity. The patient exhibited no new neurological deficits postoperatively.