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CSF-Venous Fistulas Arising Intraosseously within Bone Remodeled by Meningeal Diverticula.
AJNR Am J Neuroradiol
January 2025
Department of Radiology (M.D.M.), Permanente Medical Group, Kaiser Permanente Medical Center Santa Clara, Santa Clara, California.
CSF-venous fistulas (CVFs) are a common and increasingly recognized type of spinal CSF leak. Most of these fistulas occur in the setting of spontaneous intracranial hypotension, though nonspontaneous cases have been described as well. In most instances, CVFs arise from the dome or neck of nerve root sleeve diverticula (also called meningeal diverticula).
View Article and Find Full Text PDFTumor cells upregulate neurotransmitter GABA in the choroid plexus through STAT6-Bestrophin1 signaling, promoting leptomeningeal dissemination.
Neuro Oncol
January 2025
Department of Neurological Surgery, Keck School of Medicine, University of Southern California.
Background: Leptomeningeal dissemination (LMD) occurs when tumor cells interact with choroid plexus epithelium (CPE) to gain access to cerebrospinal fluid (CSF) in the brain's meninges and ventricular system. This disease is particularly devastating for patients due to our limited understanding and few therapeutic options. The leptomeningeal CSF is a nutritionally deprived microenvironment for tumor cells.
View Article and Find Full Text PDFNeurocognitive impact of different irradiation modalities for patients with grade I-II skull base meningioma: a prospective multi-arm cohort study (CANCER COG).
Radiat Oncol
January 2025
ISTCT UMR 6030-CNRS, Université de Caen-Normandie, Caen, France.
Background: Radiotherapy as a complement or an alternative to neurosurgery has a central role in the treatment of skull base grade I-II meningiomas. Radiotherapy techniques have improved considerably over the last two decades, becoming more effective and sparing more and more the healthy tissue surrounding the tumour. Currently, hypo-fractionated stereotactic radiotherapy (SRT) for small tumours and normo-fractionated intensity-modulated radiotherapy (IMRT) or proton-therapy (PT) for larger tumours are the most widely used techniques.
View Article and Find Full Text PDFRisk factors associated with higher WHO grade in meningiomas: a multicentric study of 552 skull base meningiomas.
Sci Rep
January 2025
Department of Neurosurgery and Neurooncology, First Faculty of Medicine, Charles University and Military University Hospital, U Vojenske nemocnice 1200, Prague, 169 02, Czech Republic.
The histological grade is crucial for therapeutic management, and its reliable preoperative detection can significantly influence treatment approach. Lacking established risk factors, this study identifies preoperative predictors of high-grade skull base meningiomas and discusses the implications of non-invasive detection. A multicentric study was conducted on 552 patients with skull base meningiomas who underwent primary surgical resection between 2014 and 2019.
View Article and Find Full Text PDFEndovascular Treatment for Tentorial Dural Arteriovenous Fistulas: A Retrospective Single-Center Study.
AJNR Am J Neuroradiol
January 2025
Department of Neurovascular Center, Changhai Hospital, Naval Medical University, Shanghai, China.
Background And Purpose: Current evidence suggests that tentorial dural arteriovenous fistulas with endovascular treatment offer a high rate of occlusion and reduced procedural risks. Here we report the clinical and angiographic outcomes in patients with tentorial dural arteriovenous fistulas who underwent endovascular treatment as first-line treatment.
Materials And Methods: A retrospective analysis was conducted on 83 patients with tentorial dural arteriovenous fistulas treated at our center from April 2009 to November 2023 using endovascular treatment.
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